I would definitely recommend it, it's probably my favourite anime. The second season, called Fumoffu, is more of a spin-off with a comedy/romance genre, while 1 and 3 are action.
Hey, I'm making a fanart of Amour crossed with an anime called Full Metal Panic. I'm going to post it on the thread when I'm done but I'd like to show some people first for their opinions. You in?