I feel like I should inform you about what genres they are
Crossfaith is metal with synthesizers
John Petrucci's solo album Suspended Animation (Glasgow Kiss is my favourite and one I'm learning to play) is just really nice guitar tracks, nice variety though; there are some more emotional songs as well as lively ones
Dream Theater has a huge variety - pop, metal, rock, jazz... I've only listened to like 4 of their songs but I really like them
I've actually realised how many sounds I used to miss... After starting to learn the guitar and focusing on actually 'listening' to music and all the sounds, you hear a lot more things