OK, throw a coin then. You won't go wrong either way.
I wanted a P182 myself, the only reason I didn't get it is because it was too small for an 8800 GTX and 7 hard drives. There's only room for 6 because the GTX is huge. With the GTS you have room for 8 disks, by the way.
If you are sure you won't need tons of disks I'd vote for the P182, it doesn't even matter if it cools better than the Aurora or not.