Like many others have already noted, the PS3 exclusives were far and away more appealing to me. Demon's Souls, Disgaea, Metal Gear Solid, Ni no Kuni, The Last of Us, Uncharted, Virtua Fighter and Valkyria Chronicles are all pretty great. I could never get into Halo after the first one (which I played on PC) and Gears was fun to play coop, but I disliked the multiplayer. I played most of the other "exclusives" on PC. That being said, most of my gaming of that generation was still on the Xbox 360 due to the VASTLY better multiplayer interface and it was the platform I moved to for Rock Band. It's sad that to this day, the PS3 has never gotten a halfway decent user interface for interacting with friends. And for all the hoopla about RROD, my X360 still works fine (I purchased like 2 years after launch however) while I've gone through both a fat PS3 and a slim PS3 with the lasers wearing out.
I bought a Wii on release and played Twilight Princess for 15 minutes and a fair amount of Wii Sports with the family for the first month. I think I spent more time playing Mega Man 2, Super C and SMB 3 on the VC for the millionth time than I did with any "legit" Wii game. I left it at my parents house when I moved and never really regretted it.