Personally, we find the use of tab washers to be a little more convenient when it comes to chainging ratios in a hurry at the circuit. You may also find the ability to get the power down early (or at any other time really) with a sprocket in this condition.
With the new season coming up it is a good time to review your sprocket collection front and rear. Do you have enough choice of ratios for all the circuits we visit? Are your sprockets in good condition? How about your chain?
We still have some great offers on chains from DID and Tsubaki, so you can save money while you stock up. Having a spare chain on hand never hurts. Likewise a few joining links are a good addition to any small spares collection, just in case you have to remove the chain to get the swinging arm out or what have you.