The only real value of QFE, that I can see, is to make a circuit look pretty on the altimeter. Downwind at 1000' and final at 500' for example.
I don't ever recall looking at the altimeter as I touchdown (if you really needed to know your ht a rad-alt would be better)
On instrument approach it matters not, as long as you know which datum is set and then fly to the appropriate minima.
QNH (or RPS) much better for terrain clearance and stopping you from entering controller airspace from below.
QFE may help for elementary/basic cct trg, but for anything else, I'd go with QNH.