I have 3 OLYs that use SM, one the C2500L also uses CF. I lost count of the total shots, I am retired, do nothing much but take pictures. So far no problems, just keep them clean. I have one I had to reinforce with plastic welder. All the works are under the contact strip, the tail is just plastic. I don't like being limited to 128mb, but I seem to love cameras that use it.. I shoot tif, only, a lot of ins and outs on those cards!