I am 37 & seem to have prominent nasolabial folds and marionette lines. Sculptra, Facelift? Or any other suggestions?

Thank you for sharing your question and photographs.  Sculptra will be able to help improve your smile lines and marionette lines if placed appropriately.  Your volume needs to be over the apples of your cheeks as formation of the creases is due to cheek descent.  Lifting of these tissues into a higher position - like in your smiling photograph - is the goal.  Hope this helps.

I think that Sculptra is a good choice for you.  Sculptra addresses the underlying fat and bone loss in the upper face which is what causes prominent nasal labial folds and marionette lines.   The downside to Sculptra, is that it is not as instant as some of the HA fillers, but in the long run is longer lasting and addresses more directly the undelrying cause.  After completing your initial Sculptra injections, you may still need some HA fillers in the area, but it will be significantly less.   

You may want to try a filler that has more "lift" to it. Radiesse is more powerful in this regard than Juvederm or Sculptra. See link below for examples.