I own 6.  2 are broken, 2 are at least 12 years old, and 2 are current.
Magnavox 4 head- dropped it while moving, hasn't worked since
OLD Goldstar 2 head- friend was tossing it out, took it, won't track right - picture rolls
Fisher 4 head - 12 years old, still going strong
Quasar 4 head - 13 years old, given to me by an aunt who said it was "broken." It wasn't.  Still works great.
ProScan 4 head HiFi - 4 years old, my favorite one, works awesome
Toshiba 4 head HiFi - 2 years old, works good, but I almost never use it.  Also strange problem with the clock 
