Either printer is a good choice, it might depend on whether you prefer cartesian or delta printers.

Both companies have good reputations, good support, and good user communities to help you out. I don't think you can go wrong with either one. Do you want a printer made in Goshen, Indiana or Lincoln, California?

I have a Printrbot+ from the original Kickstarter campaign and its reliability and durability have been fantastic, but I did break a thermistor once while changing nozzles (an easy repair). My longest print was 83+ hours, but now the prints are in the reasonable range of 10-20 hours. The new Metal Plus is probably much better.