Mikrotik is very good and has no problems when you use it in only with other Mirotik devices as clients. So if you are WISP then Mikrotik will be a good choice. If you want to use it as AP for office/home/hotel I do not recommend it. It has some serious compatibility issues with many devices with wireless Broadcom chip. This issues probably will never be fixed: http://forum.mikrotik.com/t/xiaomi-phone-low-wifi-tx-rate/93622/1