I prefer
FairUse4WM 'coz it is free and does lossless DRM stripping.
FairUse4WM 1.3 fix 2 works on Windows Vista. Unlike lossy
DRM removal software it requires many things to learn. And you may need to spend some time to adjust your OS to the requitements it has.
I don't really see much difference between
Tunebite,
Soundtaxi,
MuvAudio,
freeTunes and some other recenltly emerged DRM removal programs. I may prefer Soundtaxi and Tunebite to others 'coz they appeared earlier and their teams have enough of experience in the field.
Tunebite is a good choice if it works for you. It has a good support team. As you can see in its support forum it is not an ideal program. But the developers try to adjust it to the newer versions of Windows Media Player. You have used it and you know how good the program is.