I have been wearing O2 Optix contact lenses (14 day wear) for a year now and it's about time I ordered a new box this year. This O2 Optix I'm wearing is clear and comfortable for most of the days but there are also days when they start getting dry and itchy and I have to rush home to get out of these. This is usually the case after around 9 days of wearing (of course taking it off before going to bed). I will try a few different brand names before I order my next supply. If you guys have any brand you prefer or the ones you hate please share your thoughts.

Thank you!

Go with the one that ur doc recommended, u might not be able to find the measurements that is in your prescription otherwise.

 All the contacts get dry and thats not its fault. Depending on what you are doing and where you are,the moisture in your eye differs. Carry an eye solution on your bag all the time and you will be fine. Consult yo doctor about the type of contacts you wanna wear.

I used O2 Optix too, even i had problems after a while i started using them. Then i was recommended wearing silicon lenses. The silicon lenses are easy to wear and are comfortable.
You cannot change the brand on your own. You need to see your eye doctor. The prescription specifies what brand you will need.