Doctor Answers (3) on Contact lenses
Aqua soft is the most economical but the nozzle is not very good and the solution does not flow out smoothly. Optifree is the most expensive but the bottle is more user friendly as there is free flow of the solution. Renu free is somewhere in between in this regard. Also, a patient once told me that the transparent bottle of Renu is very useful after the solution finishes. After washing the bottle thoroughly, he used it for dispensing cooking oil! It's very handy as the oil comes out on squeezing the bottle.
What is more important is the hygienic way in which you handle the contact lenses. Always wash your hands with soap before application and removal of the lenses. Don't sleep with the lenses on.