I came into the category of " moms with larger breast", and it seemed harder to find the position that suited both me and the baby. I was afraid I´d smother them! Both boys were good feeders, but it wasn´t always easy getting myself sorted out, and at times I did have to "grin and bear it". One thing that helped me was that I had bought one of those v shaped pillows to support my back in pregnancy. When feeding I used to place the pillow with the v facing in, almost wrapping it around my waist, and then place the baby on top.
It seemed to work, holding in them in a position where I was more comfortable, and able to relax more.