are you talking PV panels or hot water ?
i have no 1st hand experience with any of them, but, me too, I am in the market for a basic set of a solar hot water system.
here`s a good starting point -
http://www.top50-solar.de/en/
some sites there even have whole books on the subject for downloads as pdf's! (if you cant find them drop me a line)
I hope we can get a good discussion going - as there seems to be some reasonably priced (around 1000bux) autosyphon systems available.
thx
al