Holy shit. I've never had a single console break on me, and I've got one of those launch PS2 fats that are supposedly prone to breaking. Hell, my launch OG Xbox is still just fine.
I have had the following break on me:
-Neo-Geo CDZ (turns out the CDZ has some sort of firmware bug that makes a lot of them fuck up at some point...brilliant!)
-Neo-Geo CD (this led me to drop the CD systems and go cart)
-Two modded Xboxes (and the second "broke" where the chip stopped working, but it works normally)
-Two PSPs (the first one dropped off a counter and the screen was destroyed; the second died from my failing to properly install an internal mod to enable TV-out [this was pre 2000 series])
-Two 360s (The first RRoD'd; the second was fucked right out of the box. I am actually on 360 #4, but that's because I traded up #3 for a newer model before leaving Japan)
So I've had good luck with Nintendo's consoles and handhelds, and good luck with Sony's consoles. I've also come across more GBA SPs and DS Lites with dead/stuck pixels compared to PSPs.
No doubt that Nintendo has the most reliable consoles; from my time working at a game shop, we got more PS2s and Xboxes in for repair than anything else. But with the Wii it's probably because they don't get much use anyway.
