I have used their stuff for years and years now and I love it. You get a whole bunch of power, very good software and maximum freedom in configurations for a very small price. Especially their enterprise grade config language is awesome, you can configure the whole thing with a few simple commands. You can export your config in a readable format, so you can quickly swap out different configs to try stuff. It also lets you understand the config completely, so you know what you are running.
Second the Mikrotik!
I have used their stuff for years and years now and I love it. You get a whole bunch of power, very good software and maximum freedom in configurations for a very small price. Especially their enterprise grade config language is awesome, you can configure the whole thing with a few simple commands. You can export your config in a readable format, so you can quickly swap out different configs to try stuff. It also lets you understand the config completely, so you know what you are running.