I am a tranny and I love to look through my large breasts to see my rock hard cock. My fav way to masturbate is with a butt plug, my favorite is the DocJohnson Men's Pleasure Wand XL. It is insertable so that it hammers right on the prostate, and has a small arm that can also rest on the perineum or the balls. It has 4 levels of vibration.
It has given me many hours of pleasure.