I lean toward the classic high flange Nuovo Record. I have built wheels with both and there is no difference difficulty wise.

I am looking for a nice pair of 36 hole clincher rims to build another set. There is something about riding on wheels that I have built that is more satisfying than those built at the LBS, and they save a few bucks in the process.

I used Sheldon Brown's instructions, took it slow and easy while reminding myself that the worst outcome would be to unlace it and start over again. Yes, I have had to do that a couple of times in the four sets of wheels that I have built.

Good luck!