Like DAB was saying it depends on what you are going to be doing with the printer as to what you would want to get in terms of technology (FDM/FFF, SLA/SL). But between the two you have picked I would go with the Printrbot. Makibox is a little on the cheap side with its quality. Printrbot has been around longer and is very good in support if issue arise. Most printers out in the market are going to print about the same resolution 50-100 microns with some such as the CEL Robox getting in the 20 micron range. You might also want to look at building your own which is such a fun project to do. If you haven't already did so I would check out the Reprap website.
I have nothing but PrinterBot. It supports my 3D printer filaments. I bought for a decent price last year, but I believe it needs upgrade for better results.
I Have a 2014 Printrbot Simple, I upgraded the bed to metal, the extruder to metal, and added the sensor kit, it's so much better, still has to be calibrated before each use but better prints, I have smaller nozzles but haven't tried them yet.
