I like flying helicopters. I got a nice scenery of my hometown, and calculated, I could get to the job within 4 minutes only, if I had a chopper

... but now, with public transport it takes about 1 hour. :s
So, flying a heli is totally different than flying an airplane. Your speed is dependent not only on the throttle, but mainly on your nose angle. You fly more high if you increase throttle and reduce incline...you go faster if you increase throttle and increase incline...for a stable cruise, you must reach a nice throttle and incline settings. If you want to slow down, just minimize throttle, and push back the stick, to point the nose upward.
In MS, unfortunately helicopters can do very crazy movements, if you reach to a state, when it goes slowly backward. So try to avoid flying backward

although it can be hard when trying to do a nice touchdown.