I'm not convinced that the PS3 is all that and a box of chocolates. PS3 sounds like a decent bluray player, I'm sure that standalone bluray players have better chipsets for upvert etc... since they are dedicated.
Other than the bluray, someone needs to convince me to have three gaming systems. I already have the Wii and it's absolutely unbeatable @ parties even with the grandparents. The 360 is the machine of choice in my house.