Since ArteFill lasts at least 5 years it is an ideal filler for a person who does not want to continue having fillers injected 2 or more times a year. How well it improves your lines will depend on the technique of the physician treating you and also how deep your lines are. If you only achieved slight improvement in the past and were returning for treatments every two months, you were probably not receiving enough product when you had your treatments; either that or the products were being injected too deeply in the skin and may not have lasted the appropriate amount of time that they should.
Juvederm and Restylane, when good correction is achieved, should last 6-12 months and Radiesse 9-18 months, although many patients like to have smaller touch-ups in between to maintain the best-looking results.
ArteFill should only require 2-3 treatments to initially achieve good correction and then you should be looking good until your face develops more volume loss or new wrinkles with aging. You will then need to add some ArteFill to correct the newer/deeper lines that have formed.