This might not pertain to the 825 however I tried WRT on a NG 3700 when I had it and it was pretty good. Only big thing is that it seems pretty complicated as far as the UI goes. There is tons of options.

I would have been nice to have a novice, intermediate and advanced UI option.
Is there a Tomato option for the 825?
I'm currently on OEM v2.05 and enjoying it greatly.