well, the quote from your dealer shows how bad info can go around.
i live near the birthplace of Fender and am reasonably familiar with the history. i also have connections with people who work for Fender and G&L and know peopel who worked with Leo.
Mexican Fenders are the same bodies and necks as the American instruments. they are made on the EXACT same lathes as the American instruments. the better looking bodies and necks stay in Corona(CA USA), get the "better hardware" and finish and become American instruments. the other bodies and necks stay across the border to be assembled in the Mexican factory. the truth is, if you go through 100 instruments, you'll find an exceptional instrument among either group. there will be more better than average instruments among the American instruments(usually) and more average instruments among the Mexican instruments. the finish SHOULD be better on the USA instrument, but not always. the quality of the hardware and wiring is definitely better in the American instruments, but if you need to save money, the Mexican instruments' hardware is more than sufficient.
it's all about the piece of wood. if the instrument is interesting enough to get you to pick it up, that's step one. if it has a great tone in the wood itself, that is step two, three, four, and straight on home to where you live. get the best piece of wood on a playable instrument that you can afford. since you like to have nice things, spend as much as you can, or at least try to find ione that you think is nice. i'd rather have a great piece of wood that something thats look great, though. i've had the opposite too many times....
if you do it this way, you really have no reason to second guess yourself. the only reason that you will be disappointed is if you just plain want something else, just to have somethings else. it won't be because of a bad instrument.