Beauty is in the eye of the beholder.

That said, you should make sure that first any new rear wheel you buy is going to work with your current components. You most likely have a freewheel. Confirm the new wheelset is freewheel compatible and not a freehub design. The freehub will require purchase of a cassette.

Check out Sheldon Brown's information on hubs, wheels, freehubs, freewheels, and related components. I'd say most of us here have spent hours poring over that site.