KDC1956, I've ridden SPDs for maybe 15 years and thy're on all of my bikes, except for an old Raleigh that still has a pair of 600 toe clips. (I DO have to keep that in mind when on that bike.) It does pay to keep the pedals clean (that chore generally exclusive to the mountain bike) and lubed with a couple of drops of chain lube irregularily. I haven't had any trouble with the cleats loosening, but was advised in the beginning to check the mounting screws from time to time, which I do.

I installed Richey V4 pedals on my T700 because Richeys have worked well on my mountain bike for years.

Brad