I must be the odd one here.....NEITHER!
Both for me are way too big and not have a sexy shape ( no insult intended to any one who likes them).
They have to have space where the ass and where legs meet, also when they put their legs and feet together standing up, there has to be space between the legs from the knees down to where the feet meet, just a little....
110LB with a nice slim waste and sexy legs, I go for...I am very fussy hence I had rejected tens of what was considered easily fuckable
Live Long and Prosper with thin ladies....LOL