I have all 3 systems...
My Wii just basically collects dust....
I have had my PS3 since the first month it came out and have had no freezing or anything. I like the controller layout for PS3 better just because it has stayed the same from PS1 and PS2, so nothing to get used too. I like playing campaigns better on my PS3.
However, I mainly use my 360 just because the online is so much better. The organization and ease of XBOX Live is great. So much quicker and easier to use than the PSN. However, the review is right, it being free does make up for what it lacks. So, if I am considering a game for multiplayer, I am forced to buy it for the 360, which limits my PS3 play time since most games these days have decent multiplayer. But, the worst thing is that I have had my 360 a year less than my PS3 and have had to send it away twice for repair already. The first time was free, and the last time was $94.
I don't really think you can go wrong with either one, but if you play alot of multiplayer, 360 is the way to go. But gameplay and controller, and long-term future, PS3 is the way to go. Leave the Wii on the shelf