This stuff is awesome. The surfaces will be slick for a few days after treatment. But it is definitely worth it. Smells great, like fresh leather, so it essentially returns the new car smell of a leather equipped car. Longest I've kept a car was 10 years, but with this stuff the leather was always in great shape. Zaino Store : Z-10 Leather in a Bottle
So far I tried Turtlewax (do NOT) and Meguiars. The latter one was OK, but I am still not so happy. It has weird smell, but I think that is good. It means it has low boiling point solvents that will evaporate quickly leaving leather moist from chemicals that supposed to stay there.
Turltewax - well, it smells nicer, but leaves leather shiny. I will pass on this one then.