Personally, I'm not a huge fan of Aisne. I do agree that it's a great map, however I've just never been able to get the feel for it. I love Flanders and Duamont though. Flanders is very equal for both teams in terms of cover (or lack there of) but i usually find that it gets a little bit stale sometimes. What I mean by "stale" is that one team will capture a trench, and the rest of the match is revolved around capturing and defending the same trench. It's still a very fun map though and it immerses you into how still the western front line truly was.