Is Juvederm Volbella truly the longest lasting and most advanced lip filler?

The results from Volbella should last about 12 months, but given your history with HA fillers, I doubt that will be the case with you. In general, Volbella on the lips is more about smoothing out the lips so that you look as if you are wearing permanent lip gloss as opposed to adding a lot of volume. Therefore, I pretty certain it won't be the best choice for you.

Allergan has done an excellent job marketing Volbella as a great option for lip filler.  The technology it uses to cross-link its filler (ie make it harder to break down) is proprietary and is purported to last longer than other methods.  This same technology is used in Voluma and some of their other fillers. However, there are many factors involved in filler breakdown other than cross-linking.
In my opinion, Volbella is an excellent choice of a filler for many patients looking for subtle plumping of the lips, but I do not use it for patients who want to notice a significant improvement in volume or reshaping the lip.
If you havent already, I would consider trying Vollure instread of Volbella, because this will give you additional volume with the same or even better longevity.  If you have already tried Vollure, Ultra plus, or even voluma, unfortunately you are likely one of those people who metabolize HA filler rapidly and therefore nothing will last as long as you want. When this is the case, we start considering implants, fat transfer, and even surgical lip lifts.
I am a big fan of surgical lip lifts in the right patient, and fat injections are also well tolerated. Make sure you see an expert who can offer all of these fillers and procedurs to be able to give you the best options. Good luck!

I am confused? VolBella is short lasting for fine lip lines. It is NOT a great long lasting volumizer filler.