Wheelset upgrade

I am looking for wheelset upgrade. Now I have two options for my budget (under $300):

1) Pro-Lite Almanzor XZ ( http://pro-lite.net/mtb-wheels/almanzor-xc 29" version )

2) Fulcrum Red Power 29 XL ( http://www.fulcrumwheels.com/en/collection/offroad/xc-all-mountain-... )

3) Pro-Lite Aragon ( http://pro-lite.net/mtb-wheels/aragon-am-xe 29" version)

Any suggestions? I think the Pro-Lite one will be the best option, but Fulcrum is much better known.

As for tyres... My Schwalbe CX Comp are very bad on sandy/loosing conditions, so I want to buy Hutchinson Piranha2 or Toro - which will be best?