No mention of budget, for high end, White Industries as above, mid range Bitex seem to get good reviews, or if you can cope with cup and cone, nothing wrong with Shimano.
No mention of rims/spokes would look at availability of everything as at present, it can be hit and lots of misses for availability.
Would look at complete wheel sets as well, unless you need something really specific (normally a dynamo hub or similar) Factory wheelsets have gotten to be a very good option, the added advantage is that you get everything in one go, and as long as you're get something that has relatively common parts, service is generally easy with tools any LBS should have (normally something like a a Park SW15 will be the most exotic bit of kit you need, although check specs) ,