What's your budget? I got a Mamiya RB67 Pro-S with a 90mm lens, waist level finder, and 120 back for about $320 at KEH. Given the plummet in prices in MF gear, I'd look long and hard for a bargain on something more reliable before I put my money into a Kiev. You might get lucky and get a perfect camera, or your might get something you have to fix, or you might get something that a trained technician has to fix, or your might get something that can't be fixed. It's a gamble, and there are lots of bargains to be had in cheap MF gear these days for stuff that's much more reliable.