I have been having a good bit of success with the M5 quad mount. As long as you keep it out of shrek range and kite the infantry the suppression will do wonders for you.
I had a quick question regarding molotovs being thrown into larger garrisons. The particular garrison in question is the large building in the center of ettelbruck station. Do the molotovs need to be thrown on top of the models inside of the garrison or can the be placed anywhere in the garrison? Over the course of about a minute I had put 4 molotovs in the building while only 2 models from the MG42 team died.