I would recomend Easton wheels. Some on here don't like them or the Company but I have found mine to be great. I have the Circiuts since I need a 650c wheel and its the only model they make in a 650c. Part of the reason I went w/ eastons is that they use normal nipples so you don't have to worry about not having the right tool to true the wheels. They have good quality sealed bearings that are easily replaceible, use steel spokes which can be had anywhere as long as the shop has a thread cutter, and are as light as the Mavic ES's for 1/2 the cost. (sorry long sentance). The are a deeper profile rim than the ES, have a smaller footprint in the wind (the hub is smaller, the spokes are smaller, and the rim is taller) all for 1/2 the cost and about the same weight.

Not a sexy, but functional, strong, and relatively light. Some may pooh-pooh, but they have worked out very well and I have no complaints.