You know... I feel like I have to defend the FSU cameras a little. A lot of them were very well made at the time--it's just that most of them don't get CLA'd. If you buy a Leica a CLA seems like a small and worthwhile expense. Not so for a FED 2 you spent 20 bucks on. Judging a camera that's never been CLA'd against a family of cameras that are probably some of the most commonly CLA'd is a little unfair. Now obviously the engineering and workmanship is better on the Leicas, because it was literally some of the best work done in the camera world ever.... but most FSU cameras, especially in the old days, were pretty well-done on their own terms.
I encourage budding photographers who can't spare the money for a Leica, but who want a similar experience, to buy FED 2 or Zorki 4. They're cheap, they have good lenses and most of the repair can be done by amateurs. I had never worked on a FP shutter when I adjusted the curtain springs on my FED 2.
As for the lenses, nothing is as good as Leitz, but a lot of the Elmar magic is simply being a modified Tessar with an early coating... and guess what the Industars are? I have gotten beautiful performance out of the most basic Soviet lens, the 26m Red P. Sharpness? Not on the level of the Elmar. Flare performance? Probably inferior to the Elmar. Worth it for the cost? A thousand times over.
And honestly when you can get a Sonnar clone for 30 bucks do you need the quality to be right up to Leica standards?