As others have said it's all about preference.
The best thing to do is find an online resourse with all the catalogues (such as Rich's site) then go over the JS
details year by year. Edge vs Lo Pro vs Edge Pro, 2 pickup vs 3 pickup, colour choice and so on.
Then pick the details you want and find one from that year.
Value is something that could change and I'm personally not expecting the JS
-1 to realistically become a huge collectors item, you'll get more for it, but you'll pay more for it too.
Trem choice is about personal preference. I like the Edge for feel and playbility and the others for practicality and to change strings on.
Whichever way you go, they're great guitars you justhave to pick the one that suits your idea of the perfect JS
(chrome finsh not included
) and go from there.