Have bought from PAw and thier shipping prices and time is horrible. Hard to beat Summit as other have stated for inventory and thier delivery is very fast. BUT.....I try to use Competiton products over Summit when I can. Smaller Company, been around a long long time. And if you have questions about for example heads, or cam etc your not talking to a guy reading notes from a catalog description which usually happens with Summit..your talking to only a handful of people who are enthusiasts and at the track tuning and running thier cars too. Just what i do but have stopped buying from PAw all together.