Well, there were general comments in that thread about the 4K sector drives in general, so I'd be somewhat cautious if you're buying.
FWIW, I just ordered a pair of these Seagate ST32000542AS drives, they're conventional 512 byte sectors and should be more than fast enough for any NAS use. They're also low power drives, and Newegg has them for $89 if you're a mailing list customer.