Took my new wheels out for a ride today after getting a replacement brifter at the LBS this morning, and all I have to say is.... WOW!!!
These are a STIFF wheelset. I feel no flex at all, and don't find it a problem to sprint to 35mph like I did with my Xero's.
I've tried the following wheelsets and can directly compare them.
Shimano 105 hub/Wolber box-section
Mavic Ksyrium Equipe
Xero XR-1

These wheels, while being about 200g heavier than the [somewhat stiff] Xero's, climb much better, and I barely notice the weight bcause of the stiffness, I didn't know that stiff wheels would make that big a difference.

They're also rock solid when decending, and just brutally fast on the flats. You can also feel how well these are balanced compared to other wheels, instead of the ultra-thin stainless spokes, two round stainless ones are placed around the valve drilling to counter the weight.
Also, the bearings are butter smooth after 65-70 miles, they feel awesome. At first, they felt a little bit lumpy in one spot but that rounded out really nice. And then, another feature that I really like is the steel freehub body, which was one thing I liked about my Mavic's and not about my Xero's. One of the main reasons I got rid of the Xero's was because I was ripping through the teeth in the aluminum body.

So in the end, the wheels were a great buy, and if you get a deal on 'em like me, they're, IMO, a best buy, now I just can't wait to get my hands on the 3's.
If you want more pictures, just ask