I imagine this is a common question, but I couldnt find the answer in a search.
I understand the physics and effects of lighter or more areodynamic wheels, but I cant decide which comes out ahead overall. I just picked up a nice and apparently very light aluminum track frame, so I will need to buy wheels for it, eventually.

It's worth noting that I can't swing the cost of the very expensive light & areo wheels (carbon rim, etc) but I could probably manage something like a $400 wheelset, which ought to leave plenty of options.

Also, I've considered using a front road hub instead of track hub- it seems that they are significantly lighter- any functional disadvantages?