I find rectangle to be pretty good after needing a replacement for sizeup when development stopped there. My solution is to just ignore the existence of the full screen windows in favor of using the max window size shortcut to fill the current display. Then I can send a window to another display or resize it with shortcuts that are easy enough to get used to and avoid all the transitions that take seconds. The whole full screen experience is so bad otherwise, and this is from someone that is very used to the trackpad and all their gestures.