have a look at the wheelsets from Superstar Components:-http://superstar.tibolts.co.uk/product_ ... cts_id=499
- 1,290g per pair @ GBP509.00http://superstar.tibolts.co.uk/product_ ... cts_id=497
- 1,520g per pair @ GBP299.00
imho, you can't really go wrong with Stans Crest rims... nice and strong and can easily be built up in to a 1500g set of rims with the right spokes and right hubs. They are built for tubeless too, so you don't need to run rubber rim-stips - just a strip of tape, a bit of sealant and off you go.
i'm running Crest rims on Hope Pro II Evos with non-tubeless Nobbly Nics (but running tubeless with sealant). They are fantastic. They handle serious trail centre red/black runs, yet are feathery light... they are certainly not 'race day' wheels.