Actually I'm much better if I am flying them myself - steep turns are fine if I'm in control, but if an instructor does them I am likely to turn green.
A very nice RAF instructor when I told him this got me to fly a series of increasingly steep turns myself, since he realised I was quite capable of doing it without help, and pattered me through them up to 85deg/full power (this was a Grob Tutor, so it coped easily with that loading!). This did indeed make me feel more in control, and I felt better. My session on wingovers felt much better, though I went green with envy instead when he demonstrated that he could do a wingover at 1G all the way through, not even spilling the coffee...
Tim