The only caution is that the online documentation is difficult to navigate as it covers many revisions of routerOS.

The documentation is really bad

The documentation is pretty atrocious

The terminology used in the UI and the documentation seems very odd at first until you realize that it is using firmware-centric concepts like "queues" to limit bandwidth.

The learning curve is steep, the documentation on their website is arcane, but there are user-provided examples and support that can be found that make it a bit easier.

I think we have had two units die after extensive abusive conditions after two years -- which is pretty darned impressive compared to a common home D-Link or Netgear unit which can freeze weekly with the load of 15-20 clients