From videos and pictures i have seen while doing much 3d printer searching i havent seen any pictures of items made with a makerbot that look any better than a well calibrated prusa. makerbots supposedly come shipped calibrated, take a look on youtube and you will see people printing with them that def need better adjustments, then look at some prusa ones and there are lots of people making very nice prints.
id go with the prusa........... and that is what i am actually doing lol. if i get into it enough i will build a second one using aluminum extrusions and use the prusa to make the parts for it.
Makerbot may look nicer on the outside but i dont see any reason to spend over 2 times as much as it will cost to build a nice prusa.