The new HPF on the B1Four has adjustable frequency cut points( I set mine at 40Hz) and a 24dB per octave gradient. The MS60B does not have a dedicated HPF but has a great bass preamp that can be setup to emulate a HPF, however to get close to the Thumpinator you need two in series as each only has a 12dB per octave gradient.
If you are going the single pedal route , as everyone says, start with a Thumpinator and a TC Spectracomp.