Borderline advertising here, but for anybody in the market for a stick, the
Tekken 6 Limited Edition for 360 (which includes the Hori stick that I use) is only $30 at bestbuy.com. Must use Store Pickup, and only applicable in the US. That's a great price for a good stick :x Doesn't look like they have a similar offer for PS3, sorry.
My current lineup is X-23/Dante/Chris. Similar to TaiCrunch I ended up liking X-23 during the Weapon-X achievement. She's fast and her combo's are fluid. Dante is just insane, don't really have to explain anything with him. He's my answer to characters like Arthur and Dormammu. His Jam Session is also a fantastic assist, I spam that to no end. Chris is my ranged character of choice, his submachine gun racks up awesome chip damage while his magnum punishes rushing. He compliments X-23 quite well.
In other news, I've completed about 30% of the missions so far. On average I get to Mission 6 or 7 before I switch characters because that's where it gets tricky. I can't really string together Air H into a standing combo, even if I mash the button it resets the combo before I swing after landing :/ I'm starting to get the hang of the DP movement though, but I still can't do it in a pinch (ie Wesker's uppercut counter).
Oh and I find myself pulling off Team Aerial Combo at every opportunity, I really should cut back on that.