Roy: The only two controllers that I both like and have direct experience with are the Morningstar SUnSaver and Sunsei controllers. The specs on the Rasmond unit look a lot like the Sunsei controller, and it looks like it can be mounted in a viewable location a lot more cleanly than the other two. I may buy one and give it a try . . . they're fairly inexpensive.
Matt: I didn't actually weigh my panels before putting them up on the roof, so I can't answer that one, but the weight
of my 105 watt system is considerably less than that of Harbor Freight's 45 watt panel set. As for the rest:
* My panels don't tilt. Tilting would have been nice, but it greatly complicates the mounting system and adds extra setup steps. We prefer the more hands-off approach of a fixed, roof mounted system so we can park it and forget about it.
* Currently you can get two 20-watt panels off of eBay for less than Harbor Freight's 45 watt set, and, because amorphous panel outputs drop 20% in the first few days in the sun, those two 20w panels will actually generate more power than the HF set. They'll also weigh much less and take up much less room. Just be sure to buy from a reputable eBay seller with a long history. (I noticed Rasmond isn't currently selling, but he's probably just on vacation or somesuch.)
* Many of the 20-watt panels are long one way and narrow the other. It makes them a good choice for mounting them on either side of the headspace ridge many fiberglass trailers have running down the center of their trailer. Most larger-wattage panels are wider; at 13" wide mine are an exception to that rule. The HF panels are the same width and about three feet long, but at 50 pounds for the set you might find you need to reinforce your fiberglass roof to prevent sagging. One of the features of my mounitng system is they sit on contoured blocks that mostly match the shape of my trailer roof and
they sit over or close to structures inside the trailer that hold the roof up.