You should just get the wheels you like, in the size you like. If you're worried about cleaning them, buy a power washer and just blast those suckers with a good stream of water.

Just kidding about that power washer thing. Cleaning wheels isn't as bad as you think. Just spray them liberally with simple green and just rinse off. If you get something like the grids (with less spokes) it's even easier to wipe down the inner part of the wheels as there is less spokes to get in your way (at least that's how I feel with my BC's).