Rui's Guide is very good source of info for settings in TMPGEnc.
TRV60 does not have a 16:9 CCD so you are throwing away 25% of your resoltuion by recording in that mode (unless you are using an anamorphic lens , which would cost more than the camera)
IMHO TMPGEnc is not THE BEST encoder but it certainly is one of the best value for money quality encoders, even if it is slow.