Since I have been with xbox my whole gaming life and I am so connected to microsoft related products (zune, windows, etc.) I prefer Microsoft. Xbox Live (eventhough paid) is just a much better online experience overall. It just seems much more organized and the Kinect is cool (the ps3 has those lollipop motion controllers.) Not dissing the PS3, almost bought one upstairs for the bluray player, amazing graphics on exclusive games and the browser (xbox is getting IE in the fall and the wii also has one).
The Wii sucks, just everything about it unless your under 12 or over 50. And the Wii U...a tablet controller for kids are you kidding me?!?
I'm always about variety in my experience, especially when it comes to gaming. I love my ps3 and i love my xbox. Other than Super Smash bros, i don't really like the wii. Even then, i prefer Melee over brawl. If other ppl like the wii, fine. It has many good experiences, mostly casual but a few hardcore. I love xbox for the sense of a community (annoying or not lol) and my ps3 for my general gaming experiences/ media.
Well I prefer Nintendo, and Wii. Even if it's not HD, Nintendo's perfectly cool with pirating and modding. Hell. I'd imagine they encourage it. If you do stuff like that to your xbox, Microsoft's like "Hey guys. Cut that out. I'm going to suspend your account forever."
And Sony's like "LOL. JAIL"