I rarely use man-to-man and high pressing but probably it's just personal taste (and not wanting to tire my players). Although I would recommend playing Both Flanks most of the time, Mixed is better against more wide formations such as 4-4-2 Wide Diamond. I also prefer mixed to short passing but if you press high, short sounds better.
There is not 1 way of playing 1 formation. It really depends on your squad, your opponent and mostly the style of play you flavor!