I can't remember who it was, but there was definitely someone in the SSFIV:AE Top 8 at Evo 2011 using a stock HRAP3. Was it Fuudo?
Whoever it was, I was glad to see my stick represented amongst all the TE sticks. I love the idea of customizing a stick, but I already love the way the stock HRAP3 looks and feels. Would it be worth it to swap out the buttons for Sanwas? The Hori buttons feel very responsive to me, but I might be willing to make the switch if it's really a noticeable difference.
PS - I am considering getting a TE stick, but do the current iterations still not work with PS2 games played via the PS3's BC? That's why I love my HRAP3. It works on PS3/PS2 games and my PC recognizes it without any problems.