From your description of your breasts, you would probably get a very nice result from a mastopexy with a lollipop incision. This could be a Hall-Findlay technique, pectoral loop or mesh support technique. All of these technique attempt to do the same thing; preferentially place breast tissue in the upper pole of the breast and then avoid the effects of gravity. To some extent, they all add some volume to the upper pole of the breast, but none of them can come close to providing the long-term upper pole fullness that breast implants can give.
Ultimately, if you're comfortable with the idea of having implants, long-term upper pole fullness will be best achieved with them. If you don't want implants, a mastopexy alone will likely give you a very nice result, with a better overall shape to your breast, but without the same amount of upper pole fullness.
Hope this helps. Best of luck.