REI has the Vista SL wheelset for 200 on sale, good to know about Jenson, thanks.
Right now I'm leaning towards the Ultegra Open pro if there's a big difference between the CXP and Open Pro rims. If there isn't I guess I'd rather support the local business than Performance or REI.
If you get any wheel from Performance, you'll be best served to take it and have it tensioned. I got the Open Pros/Ultegra from them and the rear wheel went out of true in less than 50 miles.