This thread has been going on for several weeks already and I'm sure that Brian has long since bought his rims and had his wheels built. I'm sure that in either case he has a great set of wheels. However, today, I asked the folks at the Colorado Cyclist what the actual difference in weight between the CXP33s and the Open Pros is. Each CXP33 rim weighs 470 g as opposed to 425 g for the Open Pros. I had to translate that into something I could feel. So I put socks on the scale. A pair of socks weighs a little less than 45 g. So I guess that a pair of CXP33 rims weighs about about 5 socks more than the Open Pro pair. I can live with that. But that's just me.
Rich