I like real boobs, not the plastic ones. Big ones are fun to play with for a little while, but generally when they are big, they got no nips to speak of. My GF has little boobs with inch long nips.
I dunno, butts can be too big, I just like a nice handfull.
Whats on the outside is just window dressing for whats on the inside. A nice body is fun to play with, but for any kind of relationship, I need a lot more than that.