Some Time ago, I started a Career in Jasta 13, beginning with my favorite Plane, the chaotic Fokker E4 (moving on to the even more chaotic Fokker D3).
It is a good mix of Sight-Seeing and Action, the Air isn't too crowded (even with Traffic set to "mayhem")
I like the E4, because it's practically an overtuned Oldtimer, compared to what is flying around on the other side at that Time.
Each Patrol feels more like a Test-Run for your Mechanic... "Yeah, that was fantastic! I was able to fly it for almost half an hour before the Engine exploded! Double the Time of yesterday's Run! Maybe, we'll even manage to make the Guns not shooting off the Propeller!"
Every now and then, the E4 works without major Malfunctions, and as soon as you get used to its sometimes strange Behaviors, you are the Top Dog up there...