GuitarFetish is the place to go if you wanna customize your rig to your own personal preferences, but you have to know what you are looking for. I only bought some basic stuff like strings and picks but if I ever get interested in customizing my rig a bit more this is definitely the place I will go to.
Trivium absolutely rocks! Each of their albums is somewhat unique and they really managed to capture their ideas well. Their vocalist Matt is also regularly streaming on Twitch.