Ranked in these QuestionsQuestion Ranking
Pro Has free trial with all the stuff accessible during the trial
Pro Quite cheap for the powerful performance it offers
Pro Supports many kinds of codecs
Including x265 which is the codec used for the most of the newest movies.
Pro Supports superspeed CUDA conversion for nVidia users
Which means conversion could take 20-30 minutes instead of several hours.
Con Requires an i5 or more powerful CPU for UltraHD conversion
An i3-4170, for instance, is not enough to handle downconversion from 4K/UltraHD to FullHD resolutions. Doing that with a dual core could fry the CPU.