I went with dBpoweramp based on the recommendations here. I needed a way to convert apple lossless files to FLAC to use in my car.

Nowadays, I use it to rip the occasional CD to FLAC files which I import into Sooloos on an MC600. It is a great program and easy to use. It also seems to do a better job of pulling album art than Sooloos (even when Sooloos was supported).