aka Leif Lundgren
aka Nico Lundgren
aka Nicky Lund
aka Nico Lund
aka Theta Alpha 1
aka Alpha Zeta 5
aka Alpha Zeta 6
aka Nanocat Systems
And many other aliases
Looks like someone's been busy... lol
I bought someone else's UE700 silicone tips and to me they look and fit identically to the UE900 ones, just differing in color (in clear instead of gray). They have the same notches on the bottom of the tips with the little inner ring inside the stem. EDIT: Just figured out that the number of notches differ between sizes to indicate the size. XXS = 1 notch, XS = 2 notches, S = 3 notches, M = 4 notches, L = 5 notches
FWIW, I think the TripleFi 10 tips work the best for me, perhaps because the bore size is wide enough to not block any of the holes on the nozzle. It seems to smoothen out the treble for me on most of my music. The biggest downside to these tips (and other wider bore tips) is that they are more prone to driver flex, perhaps because the most outside holes are more exposed to the air pressure. These holes I believe have a clearer path to the bigger dynamic driver further back in the housing, which is probably the driver that is flexing.
I took some pictures to illustrate my findings:
From left to right: UE TripleFi 10 Pro tip, UE900 tip (gray), UE700 tip (clear), Auvio tip
UE TripleFi 10 Pro tip on KEF M200 nozzle, very wide bore, almost all holes on nozzle are unblocked
Auvio tip on KEF M200 nozzle, outermost holes semi-blocked
UE900 tip (gray) on KEF M200 nozzle, notice how the structure of the tip interferes with the outer most holes on the nozzle, which may or may not be why the treble is less smooth sounding to me (YMMV)
I have a bunch of other tips that work to varying degrees on these as well, but these third-party tips seem to be the ones that are most talked about here. For example, I've had success with a couple pairs of clear tips that now come with the HiFiMAN RE-400. The smaller pair of the two looks close to the stock tips in fit and appearance, and I think people with larger ear canals may benefit from the larger of the two pairs since it's pretty big and bulby all the way to the tip (with a very wide bore).
FWIW, the stock tips seem to have the widest bore of them all (very slightly larger than the TF10 ones).
I don't know if it's really a worthwhile investment if they already sound sublime to you with the UE900 tips, but if you want to take a chance, go ahead. :) I prefer the sound with the TF10 tips because it is less fatiguing to me but others might find it too smooth for their music (if the changes are perceived the same way as I hear them). The sound could also change in other aspects which could end up being less desirable. It's all subjective, I guess.
Also, I would double check to make sure the UE500 tips you have aren't already the same shape and design as the TF10 ones but in clear color. Some differences that I can see from the UE900 tips are: 1) the bottom of the tips don't have the ridges on the core to indicate the size 2) wider bore 3) the bottoms of the tips seem to flare outwards ever so slightly, and 4) the inner cores are thinner in material (but wider opening in diameter).
Dsnuts linked to these earlier in this thread which do look very similar, most notably because of the outward-flared bottoms, to the TF10 tips (except clear), but I don't have those so I can't verify.
I looked at those tips in the link and they really don't look any different than the ones I have. I checked out both the UE500 and 900 tips and they looks and feel the same to me. Only difference I can tell is the color.
I don't have UE500 tips, but I have UE900 and TF10 tips. Those tips are definitely in color and there is an extra layer of silicon inside the UE900 tips. Now, it is possible that UE upgraded its UE500 tips with the tips they currently use for the UE900.
I actually like the stock tips on the M200 and have went back to those tips. I have my UE900 tips on my S2, which works fine (although those stock tips are good on the S2 too). I tried putting the S2 tips on the M200, but no go.
I just checked the inner layer and they seem the same. Both seem to have double layer and those notches. Hard to tell in the picture but here it is.
I've tried both the triple flange and double and both work well. I actually really like the dual flange on the KEF's but always prefer single flange tips.
Based on your pics, it does look like the UE500 that you have came with the same type of tips that the UE900 comes with, though it seems you can tell a difference in fit/sound? (since you mentioned the UE900 tips fit your ears best when you already had the UE500 tips)
ericp10 has the same TF10 tips that I have and he favors the UE900 ones, so it's really going to depend on the person using them. In my experience, I've always preferred tips that have bore diameter as wide as the bore on the nozzle itself, though I found a snippet written by Rin Choi on his blog in one of his reviews which describes a scenario when one would want a tip bore size smaller:
Also, upon closer inspection, it does kind of look like the tips in the previously mentioned eBay auction may be different from both the UE900 tips and the TF10 tips, as although the bottoms of the tips appear to flare out, the bore diameter actually looks about the same size as the UE900 tips, though it's still hard to be conclusive since clear tips don't show up very well in pictures.
I think the ones pictured below (this is UE Super.fi 5 from this review) are the ones included in that auction.
I think I might give the MEElectronics short biflanges a shot, which look similar to the double flanged tips that come with Sennheiser IEMs. This pack of 10 here (available in black or clear) includes a wide assortment, including the short biflanges (which DannyBai already mentioned in this post here).
Though most of the time, I do prefer single flanged tips as well.