If people ACTUALLY want a deal online, look for daysoft. I've bought them there for a couple of years now and they deliver for about half the price of specsavers. So I just got to specs for my contact lense check but don't order any.
As for contacts, I wear them whenever I'm actually doing something but try to wear my glasses at least once a week otherwise I can tell my eyes get dry.
I love dailies, they are so easy to use and then just throw away. Apparently you can buy some that you use for a few weeks and then they just dissolve in your eye naturally. Strange but sound really useful.