This is the style I have now:

The real gut punch happened when I weighed my new and old wheels and came up with as much as a 7 lb difference. Normally I pay good money for wheels that weigh LESS not MORE. I just can't live with that.
18" w/ tire: ~59 LBS
20" w/ tire: ~66 LBS
So now I'm spending an exorbitant amount of time searching for the perfect wheel that doesn't weigh more (maybe weighs less) and doesn't cost an arm and a leg. I'm going to assume a 20" wheel doesn't even exist that meets this criteria. Ultimately I think I'm going to simply put new tires on my 18's but thought I'd post here and see if anyone had any other ideas. Putting on a different set of 18's almost feels like a wasted effort.
