CMStacker: PSU at the top or the bottom?

Right, having finally gotten myself a CMStacker, I am in a quandry. I have a nice beefy PC Power & Cooling TurboCool 510, which has but a single 80mm fan in it. It also has cables long enough to bungee with. With that in mind, I can mount it either at the top or at the bottom of the Stacker. Logic would suggest that the bottom of the case would be cooler than the top, but we all know how logical computers can be. :inquisiti So basically, the problem is choice.

Should I mount my PSU at the top or at the bottom? :)

Definately at the top. U don't want the hot air from your PSU to get to ur CPU.

Thought mobo sat traditionally so surely bottom would be best...

what evers neatest ;) if watercooling stick PSU at bottom and rad at top in the PSU bay ;)

Top of case to vent the hot air out and pull cold air in.

I say top, your less likely to get as much crap in your PSU, I've had to open up and hoover a few old PSU that had huge spikes of dust in, and that was a bottom mounted one, and in a fairly clean area.