DT Swiss make really nice wheel gear.
DT 240s Hubs
DT RR 1.1 Rims
DT Supercomp spokes
32 spokes a wheel, 3-cross...very easily maintainable/serviceable (both in terms of possible spoke truing/replacement and hub servicing), light, strong and cheap(er than Ksyrium SL)
When built by a quality wheelbuilder who knows what they are doing, a wheel like this is STRONG. I have an almost identical build on my MTB (substitute the road rims for their XR 4.1d lightweight MTB rim).. following a couple of friends on a ride through the city, I pinch flatted on a sharp bluestone kerb, and before I had time to stop, realised I had a 1 metre drop to flat concrete fast approaching with a flat tyre ... nothing. No bend, no buckle, the wheel didn't even go out of true --- just a barely noticeable scar on the rim edge where there was ground contact.
However I am now a lot more caution when riding about the inner city with a bunch of freeriders, on a lightweight XC bike :p
One main draw point to the DT rims is their ability to withstand high spoke tensions. I have a road wheelset that is somewhat similar, but lower spoke count and lower durability/a-bit-too-light-for-comfort rims (DT 240 hubs, DT's light 'aero' spokes, Ritchey OCR rims, 28 spokes/wheel, 2-cross) and have had a couple of spoke breakage issues over the ~2 years I've had the wheelset. (If any more spokes break, I'm considering getting the wheel rebuilt with 28 Supercomp spokes and the DT road rims.)