While the entire ON1 Photo 10 suite is extremely awesome, I really want to credit the ON1 team.  When I first saw ON1 Photo 10, just prior to formal release, i was impressed but noticed that there was no standalone Perfect Resize.  Many of the functions were in other modules, but for me, and a lot of other pros, Perfect Resize had proven itself as the fastest and most consistent resizing tool on the planet, back to when it was still called Perfect Fractals.