There are so many helicopters and they all have someting that makes them attractive.
I flew (as paggenger never as a pilot
) only with an AB-205 and an AB-412 of the italian army. It was fun!
As an engineer I like the KA-50 Kamov. The coaxial rotor is fascinating.
Judging by the silouettes I like the MH-60 Blackhawk, the MH-6J, the SA 341 Gazelle and the AB-109.