Yeah, hills have been no problem, whether spinning or climbing out of the saddle.

I have to say that, try as I might, I am not a crazy-good spinner; don't know what my cadence is, but it's not super high. Therefore, no problem whatsoever with "outspinning" the pedals.

Conversely for me, the pedals have helped with the awkward position my right foot tends to naturally fall into (had a bizarre bicycle-related toe injury a couple years ago, and things have not been right with that foot ever since). Because of this injury, I seem to always swing the heel of my right foot in towards the crankarm; with these pedals, my foot doesn't slip into that position, and the result for me is a much more comfortable pedal stroke.

Have never ridden clipless, so I can't make any comparisons there (although I used to use toe cages, and don't miss them at all since switching to platforms).