Had a few spokes break at about 200 miles. Replaced them, and went about another 50, then one spoke broke each time I went out (3 more times). All broken spokes were rear drive side. I took the wheel to the local bike shop and they rebuilt the wheel using thicker spokes. The guy did an incredible job, and it's been holding great since. Give that a try before shelling out for new rims and hubs.