I have been reading about fan upgrades and have decided to do it, but I don't know if I want to get an electric fan or just install a flex-a-lite. I found info on the Black Magic Electric fan on Flex-a-lite's web site, it looks good but I'm not sure I like the idea of having to turn the fan on and off manually. I see that it comes with a thermostat, so does it regulate itself or do I have to turn it on and off? I also read about the Flex fans, they sound much easier but I heard that they don't cool as well, but I don't see why they souldn't work better because there is less air resistance when revolving faster. Has anyone used either or have info on what the best fan for coolong and added performance. Thanks in advance.