I got a W4 recently to compare to the TF10. For me, the TF10 is really comfortable to me with hybrids + flip mod while the W4 hurt my ears till I used it with hybrids on Westone tip stems. W4 is clearly more detailed than the TF10 and I'd say its flush with your ears. Also, the W4 is less bassy and the midrange is more forward.
Thanks for the input. I also did the flip mod and it helps, but I can usually only wear them for a couple hours before they become too discomforting. The W4 being more detailed is good to hear. I have a FiiO E17 to boost the bass if needed.