A few thoughts below. Feel free to ignore any or all of it
It's just what I remember from doing my panel last year - sorry if it's too much!!
- Kyocera seems to be the panel of choice, mainly the KC130 or KD135, I think they are. The 135 is a bit longer than the 130; if you're mounting it transversely, it doesn't leave enough space on a pop-top to mount from the ends. Both give you about 10A under ideal conditions. Arizona Wind and Sun had good prices on these panels last year; I haven't shopped around recently.
- I did see some good deals on panels from Evergreen Solar. Mostly on their blemished panels - but nobody can see your panel on the roof anyway, so cosmetic blemishes don't really count for anything.
- As far as solar controllers, you definitely want MPPT. I think it stands for 'maximum power point tracking' or somesuch; basically, your panel is closer to a 17V power source than a 12V power source when it's really cranking. An MPPT controller can turn the extra voltage into extra amps at 14V or so. Non-MPPT controllers just waste this extra power.
- Blue Sky are the popular controller with Sportsmobiles. I've heard that the Morningstar controllers are even more efficient, but at the time the controller plus the digital readout (which I wanted) was quite a bit more than what I could get a Blue Sky one for. Not sure what the prices are like now. With one panel, I figured the difference in efficiency wouldn't be huge. On the other end of the spectrum, I hear that Xantrex solar controllers are not good (but this is from the crotchety old marine electric man in town, so take it with a grain of salt!).
- Wiring the panels is very simple. Basically, two wires from the panel to the controller, and from there to the battery. That's it. If your panel has the new latching connectors (and you don't want to void your warranty by cutting off the connectors) buy a single extension cable and cut it in half. That way, you'll have two wires, each with a plug and a bare end.
- I bought the temperature sensor for my controller. I can't remember the reasoning behind it now, but at the time, after much research, I decided it was worth it
The basic idea, I think, is that a battery will charge more quickly if the voltage is correct for the battery's temperature. Controllers with a temp sensor can adjust based on your battery's temp.
- I mounted my panel with 3M VHB double-sided tape. Hasn't budged, and apparently it's not an uncommon way to mount panels on RVs. It can save a lot of headache in sealing up holes into the top. For the wiring, I put it through the top with a marine "through hull" fitting (from West Marine).
That's all that comes to mind right now. Feel free to ask any questions, and anyone please correct any misinformation I may be spreading above