FWIW, I have a pair of MK3S Prusas since last year. I loaned one to a friend who was just starting out in 3D printing and had a few projects.
Self calibrating for squareness and accuracy, good probing bed mesh compensation (what some mistakenly call auto-leveling), excellent extruder that worked with every material thrown at it, amazing removable smooth PEI sheet bed (before the textured bed production ramped up), no less than 2 major hardware (extruder design changes) upgrades since I bought it at free or near free to me, excellent built in profile support in the included slicing software, excellent manual and troubleshooting community. I cannot even recall even one extruder problem.
The bad if you can really even call it that:
After several hundred hours of printing, the bed thermistor wiring failed from flexing. Easy enough to fix, maybe a fluke, maybe just a botched assembly, maybe a bad flexing design- I upgraded to high flex silicone cable with slightly more length and thus less sharp bends. Keep in mind, this is a moving bed printer.
The PSU gets quite warm when printing ABS temps with the heated bed and extruders running more often- PSU is fanless. I heard rumors of some failing under these conditions (printing ABs or other high temps materials). Keep in mind, if you enclose the printer- then the PSU as built is inside the enclosure and even more likely to fail. In all, in 1 year, the worst failure was a cable and it was detected mid print and stopped. It might have even been recoverable much like the save feature under power loss. Parts are reasonable and plentiful and STANDARD!!! Not proprietary like much of the Raise3D system and sole source.
What I'll say. It's not as pretty or fancy as a Raise3D. It's not enclosed. It's not natively networked and the "upgrade" network solution of a Pi Zero running Octoprint leaves something to be desired. The flip side is, printing from SD card was, is, and will be the best method for 99.999% of printers made for the foreseeable future. It prints amazingly and near silently. It was darn reliable and easy to use- as proof loaned to a complete beginner. I sold my N2 plus and kept my 2 MK3 Prusas. It's not perfect, there can be slight ringing on faster prints, it is open and made more for PLA prints than ABS or other high temp materials, but I did print 1 spool of ABS parts for the upgrades and they did print in open air not enclosed. Considering you can buy several for the price of even one raise printer.......... The point is, good for beginners, good for people who just want to click print. It prints well, very well- maybe better than even a highly tuned raise3d.
Sorry, I'm jaded at this point and think the Pro2 is a steaming overpriced pile of excrement. To even consider one, I cannot defend the position any more. It's a tired design, on a good day it might be OK, but isn't even sane under current pricing. You can do better.
Scope out a https://www.fusion3design.com
before you buy something else if the Pro2 was you budget.
I happen to know the owner and met him when he started up at Maker Faire NYC back in 2013.
In other words, a MK3S is good- really good and priced quite reasonably.
A step up in Pro2 class and price is the F410.