yes i suppose i should be comparing road wheels to track/fixed gear wheels, but i know nothing about road wheels and since i am more concerned about street use rather than track. i mention mountain wheels based on their durability and strength and also because i've had some experience with them.
for street use, i would like to get some decently light fixed gear wheels. but i guess i just thought that maybe those track wheels i've seen (anything under $300-$400 basically) were heavy for a reason. i guess making the hubs and rims more aero has a cost in weight.