I would say the GUI is still lacking a bit and is not able to configure all of the advanced features however the GUI is quite capable of configuring all of the basic functions.

it's true that this thing is a bit tricky to setup if you're not used to all the settings, features, and terminology

UI is a bit hard to use and one of my settings didn't take after reboot.

It is a very powerful router, but does require a good bit of networking knowledge to get set up properly; however, the newest firmware version does include wizards that make this process much easier

The Vyatta documentation is a bit tricky to locate, but the command line is required to unlock this guy's full potential.

Need a bit of technical know-how to get it up and running, but works

Returning this since it's a bit expensive for a paperweight, but apparently not expensive enough for a router.

A bit confusing to set up, but its an amazing router.

Opening ports is a bit difficult and no real configurable DMZ mode for devices (game consoles)

The CLI is a bit awkward to use if you're coming from Cisco IOS, but it's pretty straight forward once you figure out where to find things

bit difficult to setup, but rock solid once you do with a ton of throughput

A bit difficult to configure initially as the router's firmware was a couple of versions behind current documentation on the Ubiquiti website

Its a bit tough to configure, requires a great deal of research and know how, but once you get it going its awesome

A bit hard to set up however once you get going on this, you will be very happy.

Downside is it lasted 6 months before the flash corrupted & started getting I/O errors.