I own a Rogue 2024, and it's great for a configuration of my size. (I've got 180Ah, my friend has 210Ah.) And of course, it performs with none of the problems described in the posts above. Nearly every imaginable parameter is tunable, from a Windows PC plugged into the "comm" interface" (I used a Dell Notebook to tune mine, and sometimes plug it in to download output power statistics.) Great for at-home setup, but not so great for doing something weird "on-the-fly".
A product from The Chinese firm "EP Solar" was mentioned in an earlier post. Do not buy the "Tracer", version "A". The new model, which has been since summer 2015, is excellent (The "Tracer xxxxxBN" Series.) But the old ones were inferior, in a lot of ways.
After loading on needed extras (the Remote, the comms cable, and the BTS, the new "Tracer" 20A model costs about $160. They have pretty good tuning capabilties, and perform quite well when new - even when subjected to sudden reconfiguration of "Solar" characteristics. My only concern is with the long term - they're built with Solid State components, which might not hold up as well as the "built-like a Tank" Rogue controllers. (My Rogue 2024 weighs 3x more than my friend's Tracer 2215bn.)
My configuration: "330W @ 67v genuine solar", switchable to "280W @ 24v fake solar" coming in the Bargman. The Nominal Capacity of the Rogue is only 20A (that would be 288W @ 14.4V), but it appears to "tone down" the excess input power when necessary (which occurs only within a small portion of nearly perfect "solar harvesting days"). The Tracer 2215bn has the same rating, and similar protection from overload. In bad Sun conditions, or night, I've got a dashboard switch to cut in "fake solar" from the TV - and flicking that switch on and off, multiple times, on each of the controllers, found both of them capable of retuning quickly, with no issues. :B