The three I use are PremiereProxAferEffects, Cyberlink Power Director, and Sony Vegas. However they have all their faults and weaknesses that I've found...
PremiereProxAE = God of effects, and customization. However it can't edit .mkv and has a high learning curve and requires much patience.
Cyberlinke PowerDirector = This has some pretty good effects, and oddly it lets you edit .mkv without needing to convert it first. However as I've noticed it doesn't have a trimmer. Any clips you cut on the timeline won't be stored in the Library and you have to go through the trouble again. Also it has a limit to how many clips you can have.
Sony Vegas = Easy learning curve, some good effects, trimmer, but doesn't handle .mkv.