Maxx Fan... Anyone?

Saw a 76 Chevy on eBay that has a Maxx Fan over the cab. Thought it might be some new fangled version of a Super Scoop, so I googled it. Seems fairly nifty with the remote and everything.

Anyone have any experience or know of someone that has used one of these? Any reviews? Opinions?

I'm not too up on these pictures. What are you trying to say?

I mean asides from cutting a hole in your roof and the risk of leaking.

pic??

Seems like it would work, but you can get a traditional pop-up vent hatch with an electric fan option for much less $$$
http://www.ebay.com/itm/New-Rv-Trailer-Camper-12-volt-Elixir-Power-Roof-Vent-Fan-Hatch-Exhaust-/351068521485?hash=item51bd50840d&vxp=mtr
probably doesn't draw like that super fan but at 1/10th the price should do a decent job...

I had one of those cheap vents with the fan and found the fan worthless. Notice how small the fan is with no shroud.

I would like a remote open/close. Does not need to be wireless. It is not far to run a wire.

Here is a link to the MAXX fan showing a large fan and shroud. It is expensive, but hey, don't our vans deserve the very best?

http://www.maxxair.com/products/maxxfan/maxxfan.php

I just noticed the MAXX model 4500K has a rain sensor that automatically closes the vent if it rains. Cool.
But then I read the reviews and found a lot of unhappy owners.

http://www.amazon.com/Maxxair-0004500K-MaxxFan-Standard-Remote/dp/B005JVSH9G

working in the rv industry, ive installed lots of the maxx fans, as well as the fantastic fans. they really move some air. i usually stockpile them in my garage when i remove them to install roof ac units. the fan is 12'' round. there is no comparison between one of these two, and a roof vent with a small fan.