No one mentioned Vehemence - God Was Created. It's a masterpiece. Beautiful melodies while maintaining decent amounts of riffing.

Eucharist - Mirrorworlds
Sacrilege - Lost In The Beauty You Slay

Both are excellent and classics.

Insomnium - In The Halls of Awaiting has a particular sorrowful atmosphere that is hard to find elsewhere, it's their best work with the most memorable guitar work. Be'lakor - Stone's Reach reminds me a lot of Insomnium, they have some memorable songs but can be a bit chugging heavy. Insomnium puts on a great show, even if no one else at the concert seems to know who they are...

Since we must talk about In Flames, I'm split between The Jester Race and Lunar Strain. Children of Bodom, they were one of my gateways to metal but I don't listen to them at all these days. I've seen them live 3 times, Alexi is, admittedly surprisingly, among the best on the guitar, he commands the stage and has an amazing presence that is sublime. Incredibly few other guitarists have his stage presence.