Got a couple ER-8 Pros to play with, and I must say for the price these are incredible. While it's no match for my Sophos UTM at home, a comparable unit for business use is thousands of dollars, plus the yearly sub. The latest firmware adds a bunch of features to the gui, though cli is still required for advanced configuration. 9.5/10
I would have no hesitation in recommending the ER-Lite/5 to anyone that doesn't want to be enslaved to the wifi-router upgrade cycle.