I'm kinda old school about this. I prefer wheels with conventional spokes/hubs. No bladed, no straight pull, no black spokes, etc.. This all just makes it simpler/easier to replace a spoke or re-lace a hub. Of course this is all predicated by the fact that I build/work on my own wheels.
One exception is that I have a set of XTR Centerlock/Mavic 717/DT 15ga. wheels. Not particularly light- I think about 1800 grams. But for $300 I just went ahead and bought them at the time. Strong wheels for sure. I tensioned/trued them up a bit out of the box.
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"I tell you, We are here on earth to fart around, and don't let anybody tell you any different." - Kurt Vonnegut jr.