The $36 option also gives you:

"CD Ripper: Ultra Secure & C2 Pointers
CD Ripper: Profiles"

So I is worth the extra $12 even if you don't need the batch ripper and burner.

I'm puzzled as to why you need to use MP3 Tag Studio after ripping with dBPowerAmp, what is dBPowerAmp not doing to the tags that you need doing ?
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Remind me to change my signature to something more interesting someday