I need to shave off some my growing mustache before school starts. This'll be the first time I've ever needed to shave. Gillete sent me a Mach3 a while back but I never needed it up until now. But I also got a cheap Conair electric combo trimmer and shaver. For a first timer, which one would you reccomend? I don't plan on shaving that often. I am leaning toward the Gillete right now but I don't want to cut up my upper lip (only place need to shave) and look stupid when I go back to the dorms. THanks