Clipless? I've never tried clipless. Probably never will, unless I'm going to race, or train for a race, either
In every bike I've ever ridden or test-ridden in my entire life, I've only used plain platforms, whether those be the "rat-cage" type pedals on old 10-speeds, plastic Wal-Mart bike platforms, beach cruiser platforms, or BMX platforms.
Just leave me be with my platforms without bombing me about how much power/efficiency/etc. that I'm supposedly missing out on with no clip-in systems. All those "I need my clipless on any ride over 10 miles" folks just sound downright silly to me. For one thing, I've done 40+ mile rides on plain jane platforms (no clips to speak of), and my feet were just fine! Honest!
I will try Power Grips on my next bike, however, though after reading Kent Peterson's arguments against the use of clipless pedals, I once again reiterate--don't think I'd be using clipless unless I will be racing. Road racing or triathlons. Just another area of maintenance (to avoid difficult clip-ins/enormously hard clip-outs) and proper set-up (to avoid foot hot-spots and float-related injuries) to worry about for a bike nut that's as lazy about maintenance as I am. Plus, I would have to buy a new pair of shoes that would fit the cleats for whichever clipless system I end up with, not to mention the fact that I'm too poor to buy an expensive pair of clipless pedals AND expensive shoes.
I'm too used to just hopping off my bike whenever I please to have to learn a specific way of jumping off the pedals.