The PS3 is probably my favorite of all the current gen systems...and I have had them all. (Sold the Wii due to lack of play from anyone in the family...even the 10 year old).
My only beef with the PS3 is the delay in releases for it, compared with the other systems. Specifically Stranglehold. I was more than vocal about it, so I'm sure you all know how I feel about the whole "It's here...next week. Now it's here...next month" bullshit.
I vowed to never buy Stranglehold because of it. In reality, I intend to keep true to that until I can buy it for $9.99, which will be a long while.