forget about all of those boutique wheels. you have a very reasonable budget, find yourself a wheelbuilder (local would be preferred) and have something built just for you. hand built wheels will generally be more durable, and tuned to the type of riding you want to do, they will be repairable and use commonly available parts for rebuilding.

break a ksyrium SL spoke for example - and you're pretty much out of luck. break a spoke on a pretty standard handbuilt wheel, and any bike shop should be able to sort you out in hours...