I have only seen before and after pics of Titan and Thermage. But from my extensive research, I believe it works best where skin laxity is not servere, so if you have lost lots of volume to your face then the results probably wouldn't be very dramatic.
With Facelifts, if you've lost volume too they can do a fat transfer, where they Lipo out some fat from bum or thighs and transfer to sunken areas. I expect that would last alot longer than having Fillers, mind you there are many different fillers. Sculptura, Aquamid and Bio Alcamid are Permanant fillers and may be used for loss of volume. I guess there are many options, so best to consult a professional.