Nice light wheels

Argh. My rear wheel rim has popped. Probably time to get a new rear anyway, as I've had it 6 or 7 years now. I'm a bit of a novice in buying componentry.... any suggestions as to what I should get? I don't have time to build a wheel at the moment, as we're doing up our flat, and I need to ride! Its for a singlespeed mostly for communting, and the odd bit of road training....

If the rear is knackered, the front might be too soon. Is there much benefit buying a pair?

my phil wood/open pro rear wheel is still for sale...