I have the Protool which is a good tool but take a while to get good using it. The mafell is quite a bit lighter which is something to consider since 90% of the weight of either machine is not resting on the workpeice most of the time, so you end up having to hold up that weight.
Since both of those machines are designed to cut upward toward the table, the blade is starting it's cut at the bottom of the workpiece while the operator is trying to follow a line on the top of the piece.
I found it really hard to make a clean cut with the Protool, (I haven't ever used the Mafell so I can't speak for it) so I had an electrician wire the motor to run in reverse therefore the blade was starting it's cut at the point where the operator is following the line. For me this improved the cuts I was making about 100%.

Colton Allen