I've only ever owned one Mexican Fender, a Jazz that I bought untried It was a mid 80's job and a dog... I swapped in some USA pups which didn't really help.. seemed to have no resonance and most of the strings buzzed or rattled no matter how high the action was. I know there are some good Mexican models like the Roadworns, Geddys and Classic series, but mine was a real pos.
I'd definitely need to try one before I'd buy Mexican again. I guess the guy that sold me it knew it was crap and kind of my fault as I couldn't be bothered with the hassle of sending it back.
You live and learn.