I finally took the plunge and got these. It's amazing how TOTL IEMS can sound so different.
 
Bass: Tight and full. Tip dependent. With the triple flanges thought my head was going to blow off. I like the silicone tips.
 
Mids/Treble:: A bit forward with roll off but very detailed. Good separation. Resolution is clean.
 
Highs:  Right there very detailed.
 
Soundstage: Not sure it's kind of right in your head.
 
I have the Westone w60's as well and so I was a bit overwhelmed by the huge presence these IEMS give. They are fun and musical. The w60's are more natural and organic and are more comfortable. The cable is a real disappointment on the 846's. It's too stiff and doesn't fit nicely around your ears. If I had to pick one it would depend on the mood I was in. The isolation on the 846's make them better for travelling. I have the Dunu dn-2000j's which are less half the price maybe  a third and on some tracks out perform both. The 846's are well made. Who would I recommend them to? People that like the Shure sound with great detail and in your face sound but not overly fatiguing. I'm done now. No more gear. I'm broke......

I really like this DAP but it does is make me want to get a top one. At times it really delivers and then on some tracks the vocals take a back seat.  I was debating on the ipod 6 with bigger storage or this. I find it very neutral with a nice sound stage. Its track dependent as some songs suffer. I copied all my iTunes songs and some ripped cd's and even some flac files and the unit is hard to figure out. I am constantly adjusting the volume even a few flac tracks. The ipod touch is  louder and works very well with all low impedance headphones/iems where as the FIIO is not as consistent. It can drive my 650's and he400i's at larger volumes but still is track dependent. When I a/b the ipod with it the FIIO sounds cleaner and I actually hear more but like I said the vocals can be recessed. The ipod is a more fun unit but I really like the clarity of the FIIO. If you love your ipod and music and need to replace it. Buy  another. The ipod is still a great portable music player with wifi/Bluetooth and a very good sound. If you want to listen analytically to experience sound and move into the audiophile(not sure its a gift, more like a curse) DAP's the FIIO X5 seems like a good starting point but it may make you want more which means a lot more $$$$ like an Astell and Kern ak240. Technically the FIIO is a better DAP but the ipod touch is more fun/practical/portable, easier to use, cheaper and can do more than just play songs. My ipod 16gb is low on storage but it still gets the bulk use of my listening. The FIIO I am still trying to figure out how to enjoy it more. 
 
Edit: Well I spent the day with FIIO and changed some IEM tips and found my Westone w40's really do well.  Even my audiofly af78's which I never used much of(changed tips) sounded great. Some tracks still need volume bumps but I have to admit its a very relaxing experience listening to the FIIO X5. I then put on my ipod and I was surprised that I felt the music was not clear and I actually didn't like the loudness. I noticed micro distortion. I have no carrying case or protector for the FIIO so its not going to be used on the go. That's fine the ipod does the job and it's clearly a great portable music player. I was never one for a forward  sound but I am tempted to try the Shure 535's with the FIIO X5 might be a good match to put some fun into them.  So I have to say my Ipod will now be an outdoor dog only.