I think i suggested you guys Jerez a while ago. Personally i love the map. It's big and there's a lot of passages that allow flanking.
Here's one more map i tried recently it's called Commune. Medium sized map, i think it's around same size as Algiers, but it's well build and FPS holds very nice on it.
I believe were running Metropolis map on our Amsterdam server, but i don't like it too much, FPS drops very low.
Sliema is huge, but the FPS on that map is awful.Climbing on top of every building is very nice, but it's a campy map. People just sit on windows and shoot. Unless Humpa is going for 20k kicks/bans/warnings