I too am 193cm or there abouts, and so far am not having any major issues height wise on the E170... the flight deck is a totally different story though! Admittedly I don't spend an awful lot of time in the rear galley, but so far I have been quite happy and comfortable working on it. The fwd galley feels roomier to me than some of our B737's - although it does have a serious lack of storage space, as does the rear galley!