Sounds like the school needs to standardise, as being shared by two instructors teaching such opposing methods will only ever confuse a low hours students who doesn't know any better.
When I practice ILS approaches in light singles, it really feels like you're dragging the poor thing in, when it's far more comfortable with a slightly steeper approach.
On all accounts, the speed has to be right. Stalling is a real threat, and I've certainly seen students come to the stall warner early on in an approach where they just kept adding power to stay on glide and ended up on the back of the drag curve.
Where on the runway do you touchdown, and generally how have your touchdowns been? Firm? Main wheels first and keeping the nose up as long as possible? Stall warner sounding at or before touchdown?