What's the reason for Makerware/ProfTweak? More familiarity or more available settings? Fewer settings so less likely to screw something up (I've already done plenty of that spades with RepG/Skeinforge)?

I ask because I'm running on Win8.1 right now so I can't install Makerware. I'm going to set up a separate machine for print work at some point in time, just haven't gotten around to it.