When I'm looking at pictures and porn online, actual size isnt really relevant, girls have to have curves, could be a size 6 girl with perky tits and ass, or size 18 with massive tits and arse, but realised a while ago that the tits/waist/ass ratio is what does it, a big girl with small tits, large stomch and flat ass doesnt do it for me
In civvy street i'd never pumped a girl smaller than size 14, but when I started punting I booked all shapes and sizes, quickly realised that the bigger ass is my preference, twice been banging too hard in doggy with a skinny girl and hurt the bit of skin on front of the pubic bone. Didnt stop me at the time, but had to go easy for a few weeks after till it healed