Which criterion should I use to choose between Bollneumer and Density?

I am looking into radiofrequency lifting because my skin elasticity isn't what it used to be. Initially, I only considered Dencerty, but the more I researched, the more Volneumer was mentioned. While both procedures utilize radiofrequency energy, I observed differences in energy delivery methods and treatment characteristics. Consequently, I felt it would be difficult to choose based solely on price or popularity. My main concerns are loss of elasticity around my cheeks and a blurring jawline. In this situation, what differences should I focus on when comparing the two procedures? I am also curious if there are differences in pain levels or the recovery process. For those who have consulted with both, what explanations were provided? I would also like to hear about the satisfaction levels and any shortcomings experienced by those who have actually undergone the treatments.