There isn't, that I've been able to find, one best program. I use a combination of Apple Compressor, DaVinci Resolve and After Effects. (and every once in a while, Sorenson Squeeze and Adobe Media Encoder). And when it's easier, Log and Transfer or batch export in FCP 7. Some of these are slow and it's best to leave a batch running overnight. Resolve has a bit of a learning curve but is surprisingly capable with the inclusion of LUTs and can be quite fast with the proper set up.