I stand by mavic's ksyriums. I am extremely hard on equipment and have used a set for cross two full seasons now with no complaints. Ran them with a stan's tubeless set up last season and really enjoyed them. If you are looking for a comparable product look into the bontrager race xlights. They are also available in a tubular or clincher wheelset. I ran them with challenge grifo's last season also and they ran extremely well!
Ah. the grifo's wont prevent anything a thorn can do to a tubular.... unless you get some super sweet super bullet proof tires which I doubt will happen. I would avoid Vittoria, and tufo if you have the choice. If you are looking for a slightly more aggressive treat and like the grifo casing go with the fango. It was made as a mud tire but still isnt a true mud tire, more like an aggressive all arounder. Tufo's tend to be a little stiff in the sidewall for my liking and just don't fold the way a challenge or dugast does. just my take.
Campagnolo. :D Seriously, I love my Khamisin's and they seem to be bullet proof and comfy at the same time. But I'm a noob and I don't know how the lighter wheelsets hold up to CX racing. They can come with shimano feehubs.
How do you like those Vueltas so far? I stole my Khamsin wheelset off of my road bike to complete the Bianchi, and I'm looking for cost effective wheelset to get me through until I can afford a Eurus 2-way wheelset for the road bike.