Americans use QNH for all approaches, and it does them no harm. I prefer QNH day to day (it's not hard to work out your height above TDZE when you have the evelevation listed on every IAC). The only time I preferred the use of QFE was circuit training as it's easier for people to work things out using big round number such as 500' or 1000'. It's one thing less for them to try and work out.