Honestly, as a triple-system owner, I adore all three of my systems... but the truth is that, except when Nintendo releases another awesome 1st party title (and yeah, I have most of them... Nintendo 1st party has always rocked), my Wii hardly ever turns on, and my 360 has suffered the same fate lately (although I have yet to pick up Lost Odyssey, just because I'm waiting for the price to drop). I use my PS3 the most... I like it the best, overall, of the three... I admit it.
Rather, I should say, I like the PS3 software the best of all three -- My Wii is my favorite to... I dunno... just turn on sometimes, lol. Then I'm sad because there's no decent games to play (because I ripped through all the good ones shortly after their release), so I check the weather, the votes, the new WiiWare, and turn it off again. The GC was my fav of the last gen too, despite the PS2's huge library, and frankly again, better games overall. Gimme more games, Nintendo!
As far as my living room is concerned, the PS3 is way ahead of the other two platforms thusfar. The noisy white box I'm sorta glad I don't have to turn on anymore, but I wish I had a decent reason to turn on the little one with the wierd, but relaxing menu tunes. Until I score Chocobo's Dungeon (or whatever that new rogue clone from SquareEnix is called), its just gonna sit there, watching me play cool new PS3 games... like Soul Calibur IV... and yeah I will buy the Darth Vader version of SC4 before the chocobo game, without question.