i have a couple of both, and frankly, i cannot tell much difference (if at all) tonewise now that they are very much broken in (chinese ones over 5 years old). the biggest rub i had at the time (when production moved to china) was that celestion didnt adjust the msrp even though their cost-per-unit fell dramatically. china has top quality cnc available just like the rest of the developed world, so all other things being equal (sometimes they are, sometimes they arent), the location of manufacture shouldnt have much impact on the product. just because the voice coil leads were soldered by a 12 year old girl making $2 a week shouldnt impact quality very much. or rather, if they can live with it, i guess i can too.
BTW, i would suggest listening to other speakers as well. while V-30 does what it does very well, it does have a distinct voice that doesnt work with some amps, particularly in open-backed installations. IME, and YMMV.
a