I still haven't voted. I can't make my mind up between Wii and PS3.
PS3 has some of my favourite games I played last gen: Arkham City, Red Dead Redemption (I know those two were also available on 360, but I chose PS3), and Infamous. It also has some great PS2 HD collections, like God of War and Sly Cooper. Add to that the Blu Ray player, free online services (those last two being the deciding factors for me picking PS3 over 360) and great indie games like Joe Danger, and you have a compelling system.
Wii, however, was my gateway drug. I was one of those many lapsed gamers that was attracted to the Wii when I heard about it in 2005. Starting from a kid I had a Magnavox Pong machine, an Atari 2600, a Colecovision, a Commodore 64, a NES, a SNES and a continuing series of PCs on which I would occasionally play games. Never had a N64, PSOne or PS2. Rented a Gamecube once and had a fun weekend.
The Wii was like a revelation. Like so many older, lapsed gamer folk, I, too, was intimidate by the modern controller with it's many buttons and complicated games that required you to memorize button mappings and combos or whatnot. Yet here was the Wii, with a simple, easy to use controller and crazy, space-age motion control technology that blew my little mind. I really wanted one, my wife let me buy one (cuz, you know, it's for the kids) and it was awesome. And it did exactly what Nintendo intended. It got me back into gaming in a big way, got me to buy more systems and crazy amounts of games, and now I am posting on a freaking Nintendo website. Wii has a ton of games released for it that interested me and I think I have procured just about all of them by now, though I still look. And there's the great Virtual Console and WiiWare that has some really great stuff too. And backwards compatibility with Gamecube meant that I picked up and have been enjoying many titles from that system's catalogue too.
PS3 has great games but, to me, they are almost all solo experiences. Wii has many excellent solo experiences, but it was (and is) the machine I play with my kids and with visiting friends (theirs and mine). We even played solo games together like the two Zelda and two Mario Galaxy games. But, damn, I do love that PS3 Blu Ray player and we still use it as our main Netflix box too, despite the Wii U also having.
It is a very, very tough call but I think I am going to have to give it to the Wii. It just edges out PS3 for being first in my home, and first in my heart. Call it a sentimental win, if you like.