enjoyed the sweet read! nice to know the where the re400 stands now .. especially with the slew of earphones coming out in the chinese/ asian market!
did you find the rockets eartips slip off easily? they seem like they are practically glued to your ears once their in, and it would require a tow truck to yank them out (that kind of seal sounds interesting but at the same time worrisome) 0.0 not sure how i feel about that!
That... is complicated... The tips aren't silicone; they are a medical grade thermoplastic elastomer... So they have a lot of similar properties to rubber... Like they are sticky in nature. This causes them to grip your ear and stay in very well. This is usually a good thing. However, like rubber they also expand very easily under heat. So while under regular usage if the tip stays below the expansion point it stays on the housing of the IEM very well, if not... well then it can and will come off in your ear and chances are if they are deep in you'll need a set of tweezers to get them out. It has only happened to me once and it was annoying, but using other tips will mitigate that issue.
There are other issues too... they will, over time, mold to your ear. Which you would think is a good thing, but unfortunately it actually cuts down on the seal you get, at least in my experience. I've rotated the tips and flipped them between ears to continue to get a good seal.
Just to bring this back to topic about the RE400s. I actually wasn't able to find a really usable tip from the selection they gave me so I ended up buying some Auvio tips (which work really well for them). For the Rockets I didn't but I'm highly considering investing in some Comply tips.