Thus far, the only next-generation console I own is the PS3; however, the circumstances that warranted this purchase were unusual. I recently bought an HDTV, and around the same time, I heard about the impending demise of the 20/60GB and hardware BC. The PS2 is an important console for me, and still gets the most playtime due to my enormous RPG backlog. So, I bought a 60GB after the price drop, and I've been quite happy so far. Granted, I don't own any games yet (sorry, not a fan of Uncharted), but I have DMC4 pre-ordered (interestingly enough, DMC was my first PS2 game).
I always end up owning every console of a generation, but this time 'round it came about in an interesting way. The 360 was my first planned purchase, but I'm waiting for the GPU die shrink and another price drop. I'm still actively looking for a Wii (for NMH), but I can't find the damn thing anywhere. It was mentioned earlier in this thread that this generation is odd due to the continued momentum of the PS2, and I agree. I'm still actively playing the sucker, and I still have Persona 3 and FFXII to get through before I retire it. I'm not worried about the PS3, as it'll get the jRPGs that I crave somewhere down the line (probably within a year or two). It's interesting to me seeing the relative "shift" in console priority and such, but I guess it doesn't really affect me one way or another. I have a PS3 for jRPGs and MGS4, and I'll have a 360 and a Wii for their respective games. Good times all around.
