the shoulderblade ones hurt.
The deltoid one didn't.
My recommendation? I bought a bunch of permanent markers and took them to the tattoo place. I then paid one of the casual guys 20 bucks to draw on what I wanted, and wore it around for a week. I looked in the mirror, woke up, showed it off, got feedback from others.
I then went back to the place and told them I wanted it bigger, 1 inch higher and 1.5 inches left.
You see, I knew EXACTLY what I wanted by then, and have never regretted them. I recommend you do the same. When the tattoo guy asks why, tell him your friend Ben told you to do this first, and you'll be back in a week. He may even incorporate the practice into his business.
My opinion.