What would be an excellent guitar for me? I've played for five years. I have just a not-so-good copy of Fender Stratocaster and a nylon-sringed acoustic guitar.

if you can afford it, anything by Jackson. if youre going for looks and an overall metal tone, go for the Kelly or Randy Rhoads models. If not, get something from Ibanez, like an Iceman

Schecter also makes very good mid-range guitars.