I personally think they only get better with each release! So I think the latest one is their best. Enslaved is a really great band!

...And you can't exactly compare Enslaved and Darkthrone. Darkthrone has a simplistic punk approach, while Enslaved has gone a more progressive route. Usually people who like progressive music hate punk, and the other way around, so yeah, you get what I am saying. And I personally think Darkthrone is way overrated.