er, i think, personally, that the japan strats very well made, maybe even better than the US ones. thats just a personal opinion, of course. tone wise, i think u shouldnt really be bothering abt the price tag and the make, but more of the wood type, pickups that come with it, etc.
for example, for american strats, they're usually made of swamp ash(for those grain-showing finishes) or alder. mexicans im not too sure, but usually alder. then u have jap strats which sometimes use basswood. also, poplar is sometimes used as a body wood as well.
so i think its more of a personal preference, where u pick the model, regardless of country of origin, which has the specifications that u are looking for.
p.s. again, correct me if im wrong.