i assume that you are looking at nashbar's cyclocross frame (since you are also considering a Cross-Check). i don't know who makes it, but i'm very satisfied with mine. cheaper and more than two pounds lighter than the cross-check - what's not to love? it is super-stiff, btw. at least it seems that way to me (only non-steel bike i own). welds are clean, etc. etc. etc. i'd go Nashbar.

(please excuse any randomness. i'm a bit drunk)