Yashica TLRs aren't as durable as Rolleis, but can made good images, especially with the four element Yashinon lens. Earlier Yashikor three element lenses are reputed to be softer at wide apertures. It is said that some Yashikor lenses are actually the better four element Tessar design like the Yashinon. There seems to be almost a cult status with high prices on the later 124 series of Yashicas. I consider the older ones to be more cost effective. Careful shopping on ebay might be better than paying $100 for the 635.