I haven't poked, but i've heard 25g 1" is a good size, but 23g 1" for glutes and quads.
Any bigger increases pain for the majority. Also, certain gear hurts more than other.
As for bitch tits, to prevent you mst do post cycle and take anti-e during cycle for certain gear. Many take arimidex or femura or nolva during cycle..post many take nolva or clomid.
Ask the experienced users, I am still a newbie as well thats been researching before i do a cycle. U SHOULD RESEARCH ATLEAST A FEW MONTHS BEFORE YOU DO IT. Everyday I learn new stuff.
Have you ever tried the HST program for size?