I've got a set of Reynolds Stratus DV's (tubular) and a set of 2003 Zipp 404's (clinchers). I can say that the Reynolds are superior in every way over the Zipps. They are lighter, stiffer and seem to accelerate much faster and easier. They also climb better than the Zipps. With the 404's I have to open the rear brake to keep the rim from rubbing the brake pads while I climb. The Stratus on the other hand are rock solid. I used them in a windy road race a couple weeks ago and they were awesome. I did have some trouble with the crosswinds but that is to be expected but the 46mm rim wasn't too bad.
As for the White hubs, I like them. They may be heavier but they are smooth strong and reliable. Also, the weight is in the hubs instead of the rims so it doesn't matter as much. I also have LEW composite wheels with the same White LTA hubs. From what I understand, LEW used White hubs exclusively because they were the only hub with flanges strong enough to withstand the massive tension used in the wheel build. That tension is what helps give the Reynolds/LEW wheels there stiffness. The carbon rims used by Reynolds are also supposed to be the strongest rims made. I read somewhere that the Stratus rim alone can withstand 850 lbs. Also, White Ind is an excellent company to deal with if you ever have a problem with their product. They stand behind their products 100% and will do whatever it takes to make it right even if the problem was caused by the consumer like mine was on my LEW front wheel.
I can attest to their strength since I weigh 210 lbs and I have pounded these wheels while riding out of the saddle. They actually give a stiffer ride than my Ksyrium SLs if that tells you anything! Especially with the tires inflated to 140 psi.
In my opinion these are the ultimate carbon wheel especially for the money. I paid a little over $750 for mine brand new on ebay! What a steal