I have seen enough SL/SL2 bodies in used camera shops with spots on focusing screens and delaminating prisms to not contemplate buying one but then again maybe that is not a good sample rate since they are in 2nd hand shops for a reason. I then read on Photo.net that this is a common problem. Will these finder problems happen to all SL2's eventually? My questions is that even if I do find an SL2 with a perfect prism should I expect it to go bad eventually with use? I rarely see this problem exist in other brands even the older Contarex.