Thanks Maine Sail, I value your opinion. I will look into that. I've read your solar write up (thank you very much for giving us all that great info for free BTW) and I'm not totally clear on why MPPT is only worthwhile with the larger wattage panels/arrays. Maybe I just need to read it again, more cafefully
In the meantime, for those searchers stumbling across this thread, here is an interesting video about another chinese MPPT controller:
I'm totally one of those "buy it once" people but I've had some good experiences with knock off stuff. If you think about it, Apple products, hell, MOST of the electronic devices we use day to day are manufactured in China so they have the capacity and the ability. Just a matter of sorting through all the lousy products to find those high value low cost needles in the proverbial haystack (which ebay surely is).