I have been running the QA1 brand with good results, I think they are a good middle of the road brand at a reasonable price, alot of your decision will be based on car weight and horsepower,,I don't think I would use them on a full tilt pro mod but for my 10.00 sec dart they are fine, as normal I get mine from Jegs.

Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.