I loved my Printrbot, past tense, but I still like it. Lets go through the criteria first and then I will give my historic outlook.
Print Quality: 3 out of 5, lets face it, the Simple Metal has average print quality. Not bad, not phenomenal, but very acceptable.
Value: 3 out of 5, when it came out they became known for being a good printer for a good price. But over time the price is average and middle of the pack. The new Simple 2016 is ~$1000, getting kinda expensive for the once $599 printer; Simple Metal.
Ease of Use: 3 out of 5, should maybe be lower. Printrbot has a way of flip flopping on who they support for slicing, Cura or Repetier. Come on people, your running a company here, make up your customers minds. The slicing software is free, so... I guess you can just pick.
Customer Service: 1 out of 5, they dont have a zero out of 5, I have always had problems with Printrbot. You have to be careful when looking at their products, there is almost always fine print somewhere. Heated bed for ABS (fine print) only heats up to 80ºC, ABS likes ~100ºC heated bed. If you have a problem there is a lot of fine print you agree to when you buy, and they will probably refer you to the 'community' instead of their own non-existent 'support'. This is documented in most published reviews I have read of Printrbot.
Build Quality: 4 out of 5, pretty well build and designed, if you don't mind making your own modifications. Most that have a 3D printer consider themselves 'Makers'. Making is part of the fun, and although well built, they also leave a lot to be desired. An enclosed print area for environment stability is a good DIY way to improve their 'unique' design.
Community: 4 out of 5, there is a community, whether it is out of necessity or a sense to belong, there is a community. I am not going to knock a bunch of people trying to help out due to the lack of a 'support' team from the company. But... you get what you pay for here, lots of opinions.
Success Rate: 3 out of 5, it is an average printer, some are better and some are worse.
Software: 1 out of 5, there is no zero out of 5. They don't have software, and they flip flop on which freeware they support.
Running Expenses: 3 out of 5, very average. They do support openware filament, so this is just as much up to the user as it is the company. You are locked in to Printrbot for little things like nozzles, but most repair items can be found on Amazon, besides if you have problems with your machine, don't rely on 'support'.
Delightfulness: 1 out of 5, lets face it, their 'support' sucks and that can ruin any good experience. I still like my Simple Metal Silver, and it serves me well, but at this point I could probably rebuild the thing from scratch, because I had to figure it out due to 'support'.
When I got my Simple Metal Silver I loved it. Then it caught on fire. See Printrbot still thinks putting a control board under the heat bed is a good idea. As a Physicist I understand Electrodynamics and run away currents. I fixed my 'Bot' by relocating the control board. https://pinshape.com/items/299...
This is what a Printrbot owner does, they improve their bot. I also built an enclosure to stabilize the ambient work environment, greatly improving the success of prints and the quality. Thermoplastic lamination is a fickle thing.
I would talk with others who have a printer and ask them first what they don't like about their printer before buying a printer, and try to find one that people don't complain about. Don't get me wrong, I loved my Printrbot, and I still like it. But there are a lot of printers out there, and many already have what you want your Printrbot to have someday. Bv(