Other Cities
I like them real. I rather see a bit of a sag than an obvious boob job. Now if picking my favorite kind I would say firm, smaller but not to small, natural, and perky. Mia D from Met-Art.com is a good example.
Care to start one? 
No offense to you MsCharlotte. I didn't even look at your profile until after I answered your question. My taste runs to the smaller sizes, but I know there's a lot of guys out there who like them big. Thanks for posting the question. I hope you get more replies. As you probably know, We have been trying to get this board more active. Feel free to answer some of the other threads below, (best, worst, old days, hobby in your area, etc.) The threads don't move down the page very fast so posts added to a few day old thread still get reads. Or even start a photo thread. Thanks for posting on our little "ter wasteland"