Wheels for an Ottrott - Rider at 210 lbs.

[oldguy00]

Most people I know who own Zipps have had them break at some point, regardless of body weight. Nothing personal against Zipp, just a fact.
If you are getting new wheels anyway, for a similar cost to the Zipps, you might be able to get a really nice set of Edge(Enve) custom built deep carbon wheels that will be light and built to withstand your weight.
If you are not concerned about the weight of the wheels, then there is the newer Mavic Cosmic Carbone SLR's that have been on bonktown for $999 several times lately. They would be pretty bombproof, and are really nice looking.

All that said, if you are buying your Zipps from an authorized dealer/shop, then you should have warranty coverage and have no problem getting them replaced when they break. But if you buy them off a forum, ebay, etc., no such warranty (at least I wouldn't count on it).
Cheers