I have narrow feetz and heelz wit a v-high instep...
I find Pearl Izumi fits me well, has a generous toebox and good heel grip. And the ball of foot location accommodates me well (more forward ball of foot with shorter toez)
I'm also luvin the Performance CM300s I have, little tighter toebox but still very comfortable and great grip on the heel, perfect on the toebox location. I tend to size down on this model for a good fit.
Shimanos works sometimes, but they have a bit too much forward room when I have the ball of my foot properly sized in the pocket. A bit much 'spooning' on the forward footbed
I avoid Adidas like the plague, very narrow toebox, even for my narrow feetz, combine that with pronounced 'spooning' on the footbed and they become excruciating on a ride over an hour. But then maybe a wider version might be OK.
Selection of shoes and sizing/widths at most LBS usually leaves much to be desired...