Bdill93
Undisputed King of FOMO
Definitely advise getting your coach to check your swing - having mentioned the comparitive lack of distance! That's the sort of thing (s)he has the equivalent of a degree for!!
And just to add to the tally of unobserved offerings.... From the distances with other clubs, it seems to me you 'should' be using at least a Stiff flex shaft. It's possible, but by no means certain, that you are 'protecting' the relative 'softness' of the 'Regular' (there's no real cross industry scale!) by swinging slower than you should/could. By 'upgrading to a Stiff fles (or a more appropriate profile that a fitter could determine) your Driver swing speed might increase simply because the shaft feels more stable.
As mentioned in previous posts, comparing alternative shafts is pretty simple these days!
You're not wrong - custom fit irons are stiff shafted (and longer) - just not had the money to invest the same in a driver yet! £500+ for one club is just painful and wasnt a priority.
I will at some point get a driver fitting too!