As you don't elaborate on which card you have it is difficult to say, if it is a newer card then you can try the latest "official" release the 91.31, unfortunately the 91.31 has the SLi balloon pop up and tray icon bugs for single card users, these issues fixed in the 91.33 Beta, you may also like to try the 91.47 Beta.
Each card runs different drivers in different ways, the only way to find out the "best" driver for your card is to try them and see.
If on the other hand you have an "older" card you may be better off staying with your current driver.