Just wondering if its worth the extra $100 for the Epi Les Paul Standard Plain Top instead of the Studio, what are the differences between them?
The plain top is just a different-coloured Standard. I think the Studio is a stripped-back Standard.
Studio looks worse/cheaper quality, just like the standard looks crap compared to the custom
Studios are a much inferior build quality, and will sound different tonally too.

A Standard (plain or plus; they're the same just one with regular maple and one with flame) is the minimum you should even think of buying. Really though you shouldn't aim any lower than a Custom.
too bad i barely have enough for the Standard

so how come plus tops cost so much more than plain tops?