For the record, I got a set of MKS EZY Superior Touring Lite pedals at the beginning of the year. I can't really evaluate them as a removeable pedal, yet, because there hasn't been a need to remove them, and I can't evaluate longevity, of course, and won't be able to for a while, given that these are on my back-up bike. I can say that it was immediately clear that the looseness of my old pedals had been affecting the ride. The new pedals feel great, and the bike feels a lot better to ride. Thanks for your suggestions, everyone.