Basically everything worth using is just a wrapper for FFMPEG these days, so they all perform the same, just with different interfaces. So Handbrake will always be the go-to for the basics, but if you are looking for automation and custom processing based on rules you set out, then FileFlows is worth playing with
Sure, but something tells me the kinds of people who use software like Wondershare and Aiseesoft video converters arent going to be writing their own FFMPEG automations in batch files or bash scripts.