I own both SSF4AE and SFxT on PC, but finding players of my skill level and area (NA - Canada) is often a challenge, due to the fact that the online community is very small. In SFxT I can't find ANYONE at all, and in SSF4AE I often find myself fighting players well above my rating. Just to give you an idea, today I fought this guy that was ranked #7 BP wise. Let's not get into details, but it didn't go all that well for me.
Anyways, I bought a PS3 the other day mainly for fighting games, and I am still deciding on which SF game to get. I mainly play RYU and KEN , or characters with similar move sets (SAGAT,SAKURA,DAN,etc). I am looking for a somewhat balance game, with a large community, and that it won't take me years to master. If SFxT is in any shape or form like the PC version (regarding the technical difficulties), I won't even consider it.
PS: Let me mention that I own SC5, and MK9. I heard persona 4 arena was a good game, but I am not sure about it. I grew up playing some street fighter, and quite a bit of SNK vs Capcom (1 and 2). Anyways, ideas and thoughts are appreciated it.