My track record. Mostly just replacing older models for newer ones.
-PS3: Still on the same 20GB launch model. At some point would like to get a slim for U.S. DVDs and wi-fi (to use ad-hoc party and stream video), but not until they're cheap.
-Wii: Still on the same launch model.
-360: Currently on #4. #1 was bought at launch and RRoD'd in 2007, IIRC. #2 was defective right out of the box. #3 was fine but occasionally would freeze up, so I traded it out for the current model (wanted HDMI and a quieter drive anyway) in 2008.
-PSP: Currently on #5. #1 fell off a counter and the screen busted. #2 was a friend's hacked PSP that he sold me cheap to replace it. I tried to mod it for video out and failed. #3 was a white 1000 series. #4 was a launch model that was hacked. Still have it. #5 is a 2000 that is hacked.
-DS: Currently on #5. #1 was sold because DS fat sucked at launch. I got a Japanese PSP instead. #2 was a white fat DS bought for Castlevania DoS. Sold that to get #3, which was a light blue DS Lite. Wanted white though, and thanks to Japan's insane trade prices at the time, I was able to trade that DS Lite for a brand new white one, the difference being 1000 yen. #4 was sold off just recently; got a #5, a DSi, in 2008 and didn't touch it after that. I barely ever play this system.
^Fud
Everyone knows that the fat PS2s had worse DVD drives.
They both sucked. We got an equal amount of busted fat PS2s and OG Xbox systems at my old game store job.