Heat-sink trans coolers. Who's got them, and how do you like them?

I'm pretty much guaranteed constant triple digit weather every summer where I live and rarely even see frost in the dead of winter.

I'm thinking that I will still try out one of these heat sink tube coolers later this year. It's driving me nuts that nobody seems to have any real, empirical testing results for them. None of the manufacturers even have any information on btu or gvw ratings for these products.

I'll probably just make a youtube video comparing real results between the m7b and a derale heatsink cooler. Gonna wait until I get into those triple digits though. Wanna really put it through its paces.

For now, I just want something that will definitely work.