The one thing I really love about the 360 is that I can download demos like crazy. Man, that Dead Raising demo was fun (yes another Capcom demo I've played).
A thing to note is that when the PS3 does come out and with it's limited amount of titles, the 360 will already have it's first generation of games and it's second generation (Gears of War, Halo 3, etc.) already on the way (well GOW might be out when PS3 launchs.
As for the Wii, Nintendo even said they aren't tring to directly compete with Sony and Microsoft, and a look at their design definatly reflects on that. I think motion sensed gameplay will start to be more of a hassle then just using a regular controller. That is why I'm glad MS is sticking with traditional force-feedback (vibration controllers instead of sony's force-feedbackless motion design.
Motion sensing, I believe, is going to be like those things that are neat for the first while then gets less-exciting afterwards.
I also hear MS is going to release a 100GB hard drive (which I would really like) but I hope it's not going to be too expensive, but I wouldn't be surprised to see $200+ for it (currently the 20 gig costs 100 bucks). I hope they release multiple models like a 60 gig which is something I would settle for.
Also about 360 price drops, from what I'm hearing it's going to be $299 and $219 when PS3 is launched but if I were MS I would just drop the core package and just use the "premium" at $299.