I like the guitar work of Trivium. Those boys are capable of some nice solos and leads. But I don't listen to Trivium for a couple of reasons.
1. The vocals. Usually I don't ever mind vocals. Usually they don't hold anything to my ears compared to the other instruments. But with metalcore and the entire clean, almost whining, vocals just get on my nerves. There is nothing about it that can be liked.
2. The songs are structured in such a way that listening to an entire album is almost like listening to one song on repeat. I'm not saying they all sound the same because there are definitely different sounding but they just don't go anywhere. Metallica's old songs progressed, changed and took you on a journey from start to finish. But these songs really don't take you anywhere and when the album is done I feel like I've just listened to 12 radio hits with no sense of real progression or even an urge to explore anything off the same worn path.