The Sennheiser MKH 60 is a stalwart in the professional sound world. It's been used on countless films and TV shows since it was originally introduced, alongside the rest of the original MKH range (20, 30, 40, 50, 60 & 70). It's the mic I've used most in the time that I've been a sound recordist and boom operator. I've swung it on everything from news, to feature films and it's never gone wrong (despite me dropping it on a fair number of occasions).
I see the MKH 60 as the short shotgun mic that all others should be judged against. It's sensitive, has great off axis rejection, yet it rolls off smoothly without too much in the way of colouration. It's one of the lowest self noise condenser mics available, and it's built to withstand warzones!
That build quality does come at the price of weight though, and it is one of the heavier shotgun mics out there, which may be it's only real downside.
Tonally the MKH range is very flat, and the MKH 60 is no exception, almost pancake flat from 50Hz to 20kHz, with just a little roll off between 50Hz and 200Hz. Like the rest of the MKH range it also has EQ controls on the side of the mic to boost highs, roll off lows and for a 10dB pad.