Well.. I've gone through the folder phase and now have in my possession a couple of old el-cheapo TLR cameras. All in all I think I've bought four old TLR's. All had shutter problems, one had hazy lenses and a rotten mirror and at least two had light leaks. I've burned a lot of money and frustration to get two working TLR cameras. If I'm honest, only one of them is really good.
So I think I'm qualified to the next MF level.