I like mavic wheels, especially the crossmax. Yes you can get "even lighter" if you want, but they are rock solid and I dont think any other wheel can offer the same strength for the same weight. I have a 5 year old set and have never had them trued. They still run in a perfect line.
Yes, sometimes the free hub can be a bit dodgy, but regular maintenance takes care of that.
I've also had some crosstrails and for the price you cant go wrong with them. I ran a set around the peaks running a 2.25 tyre on them, with no problem. I then sold them to a riding buddy and he continues to bash them round. They just keep going.
For me Mavic wheels work, no need to look elsewhere.
oh, and I have a brand new set of crosstrails for sale at the moment. Only had tyres and disc fitted, never used. Let me know if you are interested as they are listed on a rival website!