The red ring of death was a major issue in the early life of the 360 after that they worked quite well. My 360 slim is running to this day and my brother still has his normal X360 which still works. Adapting 360 early meant you were boned, other than that they were doing fine for a long time. The disc drive of my original 360 eventually died but that was after like 5 years of intense use.

X360 cause it has a big catalogue of good games in its own gen + backwards compatability with the OG Xbox. That means Halo 1-3 + Reach, Halo Wars, Mass Effect 1-3, a bunch of decent CoD campaigns, GTA 4+5, 4 Gears of War games, Borderlands 1 & 2, bunch of Assassins Creed, Batman & Tomb Raider Reboot and bunch more stuff Im forgetting