Lip fillers do great and look natural if done with skill and expertise. I suggest you see an expert for treatment options. Best, Dr. Emer
Hyaluronic fillers, such as Restylane and Juvederm, are used in the lips. A calcium based filler such as Radiesse should be avoided in the lips.
While the type of filler plays a part, the most important factor is the injector/doctor who performs the procedure. Any of the fillers you've mentioned will do the job. Perfect symmetry should not be expected. Filler WILL make the lips protrude more as they are filling up an area and the volume has to expand somewhere! The more filler you use, the more the lips will protrude. 0.5ml to 1ml should do nicely. Definitely don't over do it. You can always add on. It's a much more complex to backtrack with fillers. Many fine doctors in NYC who can perform this for you. Pick an area convenient for you, make a list of 10 plastic surgeons or dermatologists, and then look at their before and after photos to get a feel of if the doctor can give you what you want. Best of luck!