SOLDIERX.COM Nobody Can Stop Information Insemination

I'm in the process of building a dedicated UTM appliance to replace my Netgear WNDR3700 router. I feel that the Netgear has very limited options even with the custom DD-WRT firmware loaded on it.

I've done quite a bit of research and have narrowed the field to Untangle, pfSense, Endian and Astaro.

I would be using the free/community version of each of these products. Does anyone have any personal experience with any of these products?

Any advice would be greatly appreciated.