I made the same trade from B3K to VMT and im happy with it but that not so saw the B3K is better or worse. For me, the main difference for me is the tone sculpting, the B3K uses toggle switches and the VMT an "Era" knob. The B3K will give you a bit more modern Gain where as the VMT has a more old school overdrive.
Both are really fine pedals for Bass and you cant go wrong, some guys prefer Ford's and other like Chevy's...