Need wheel advice

I would go for Zondas, shimano hub or the equivalent Fulcrum, great bearings, and low weight, around 1550g

Another vote for RS81's from me

Have a look at Planet-X AL-30's - around just over 1600g for £150 or Superstarcomponents have a lot of choice between £150 and £300, mostly sub 1700g too.

Fulcrums and Mavics aren't the lightest for their particular price point.

I have a set of 2008 Aksiums, they weigh 1825g. You need to remember that all quoted weights are without tyres, tubes, cassette and skewers.

I'd go for RS80's or RS81's if i were in your position. 1500g for around £350.

Not sure the bearings match your criteria though.

Campagno Zonda's with shimano hub are probably worth a look in also.

Fulcrum Quattro's.

I just bought some Easton EA90 RTs from Chain Reaction for £330 (RRP £680) - they were doing 10% off that too but that's finished now I think. Not seen them yet but I think they're meant to be 1550g though reviews say maybe they're more like 1600g - no rim tape needed though.

For that sort of money, i'd seriously consider some hand-builts, e.g. Miche Primato hubs, H Plus Son rims and Alpina spokes. Plenty of folk to choose from, i've found this very useful (no affliation), had some Alpina elliptical spokes in recently and has quite a few happy customers on BR by the sound of it

http://paolocoppo.drupalgardens.com/

There are many others though - Wheelsmith, CycleClinic, Just Riding Along, DCR, Strada and so on and so on. Be surprised if there weren't quite a few people on here who couldn't comment on choices. Just me 2p worth anyway.

Shimano Dura Ace C24...1454 g (with skewers)...my go to climbing wheels...also heard the Schwalbe One's are incredible tires!

I think your wheels will be advertised at a lot less than the weight you are quoting - a google says aksium wheels are about 1800g so you already have what you want it seems.

Ksyriums or Fulcrum racing 3 ??