You can't go wrong with the savings you'll get from the Weinnman's just be sure you get them trued/tensioned by a good shop or any wheelset you buy online is gonna give you problems. Wheels are like any other part of the machine, if you take care of them they will last you longer than you're gonna want them on your bike.
I've had Open pros, cheap Sun, ALX wheels, Velocity, Mavic, you name it, and none made that much of a difference when riding fixed.