Which shaped BBL would be best for me: heart or bubble? (photo)

One photo cannot be employed to determine the best butt shape for you.  You need to be seen in person or provide additional photos via Skype for you and your board certified plastic surgeon to discuss your end goals and the likelihood of achieving them based upon your fat reserves and anatomy.Kenneth Hughes, MD, ABPS Board Certified Plastic Surgeon
Los Angeles, CA

Hello dear!
Thanks for the question and provided information as well.
Based on your pictures, you are a good candidate for liposuction with BBL, and I think you'll get very good results. 
Liposuction allows your plastic surgeon to transform your entire shape. You can improve your abdomen, hips, back and flanks, and of course your buttock, to give you a beautiful heart shape.
In general, you need to be physically healthy and at a stable weight, have realistic expectations, be a non-smoker and your BMI needs to be 30 or less.
l recommend you to make an appointment with a board certified plastic surgeon to talk about your goals and anything you need to know.
Good luck :)