Kevin-
i have only been using mine on and off a couple weeks, (mainly OFF, for lack of real need and slow control box build, and only having a Ametek 30 VDC up).
I don't have a "real" opinion of it yet, but unit is well built, BACKED for 5 years!!!
I only saw a price of about $145.00 USD, I got mine real cheap off of E_Bay. I still need to find out how much for the xtra Amps units, (if you, please tell!).
It's manual is great shows how to wire in single/multi banks, wind/solar combo's, just about what anybody has ever asked them it seems.
I'll be posting more about it as I go in my diary.