Well I have no experience with their TV's so I didn't mention that. As always your mileage may vary, I was just giving you mine and my aquaintances'.
My original 2002 Gamecube still works (yes the one with Serial Port 1&2 and the component output connector).
My Wii was sent in to have the drive replaced to play dual-layered discs (Super Smash Bros Brawl) courtesy of Nintendo. It's a launch day unit otherwise.
I wasn't questioning the lack of quality on the 360. Sorta like the PS2 last gen that the games library is so important that people will get them fixed or replaced. When you got it like that, I guess your initial quality can suffer if you have the dedicated user base. Same was true of the PS2. You say your slim(s) works great..good for you, I'd pity you if you had bought one of the earlier models.