While I agree that eyelets are ‘better’ in theory, it’s silly to limit choices based on that criteria if it’s not a real world issue. I’ve had plenty of Mavic rims that had eyelets crack at the spoke holes still.
Flows seem to last well so that’s what I’d base the decision on…
Besides, three or four years use from a rim that’s designed to for abuse doesn’t seem awful anyway – plus it’d only be the cost of rims + rebuild.
FWIW, obviously not unbiased but:
Why don’t you use eyelets in building your rims?
Single eyeleted rims serve primarily as a means to reduce the lubrication needed between the spoke nipple and rim interface for automated wheel building equipment. In the case of a hand built wheel where each nipple can be properly lubricated, single eyelets don’t present much of a benefit and actually require larger holes in the rim structure.
http://www.notubes.com/help/frequentlyaskedquestions.aspx