i bout a set on sale from napa got it for 45 it goes up to a t60 wich is usually the biggest youll ever need the set came with regular and tamper proof bits and a set of inverted torx its basicall a kd tools set you can get off amazon i think but ive never seen it as cheap as i got from napa and ive used the **** out of them and havent broken one yet
Forgot to mention im looking for screwdrivers
http://www.sears.com/shc/s/p_10153_12605_00949302000P?prdNo=2&blockNo=2&blockType=G2
These are great and the price is also excellent! I've had these for about 4 years and they're awesome--used professionally in the automotive field.

they left the T40 out of the list. I have that set, had to warranty one right out of the package.
But, I REALLY like my Hazet torx sockets!
Wiha are the best i've ever used, far better than Snap-on and a fraction of the price.