I'd also consider getting a second body for $7K. Overall, I have found the system to be fairly robust, but I have also had the occasional repair. I own another medium format system that I can rely on in that case, but they are totally different systems. Or I'd wait for the 645Dii, which is supposed to have a longer shutter life, perhaps translating into improved durability. Overall, my 645D has been my #1 system in terms of reliability, especially exposure settings, autofocus, macro flash etc.. Connections, interfaces, helicoids all seem to be built to last forever. Haven't seen such ruggedness in other systems that I have used. But I agree, the 645D body electronics and shutter are the weak point. However, you will discover other weak points in other systems when you use them long enough. For example, the weak point of the Hy6 system are those exposure adjustment wheels and the autofocus mechanism in the new lenses. They need to repaired every 5 - 10 years or so. They fail more gently as you can still use them for a little bit with reduced function, but it comes down to the same. On the other hand, the Hy6 factory service has recently been very reliable. Pentax still has to work on their service issues, but that's nothing a second body cannot deal with, especially if you consider the costs of the lenses and accessories that are available in almost new condition. If it was me and if I was to consider any of the full frame bodies, I'd wait until next year and at least check out Canon's response to the D800e. Also Phase will have a new body next year. But as I said, I'd give your 645D system another chance.