I wouldn't count out MP purple shaft cams either if you run into what your looking for. I am running the MP hemi grind in my rebuilt 440 with a single plane and 750 vac sec and I love it. Has the sound and power I want for a street car. If you don't match your parts to the cam or tune right, it's not the cams fault you have a bad combination. Tons of the small block guys using the .484 lift cam, very popular along with the .509 cam for street/strip setups. I've already bought a purple shaft cam for the wifes small block rebuild too. I love the Comp website though, you can try different cams and look at the results with your setup to get the right cam.