Now, I don't know if I'd go so far as to call a P4 buyer stupid, but for most, it really doesn't seem like a logical descision right now. Unless you're one of the select individuals who can take advantage of the few applications in which a P4 excels, I'd have to argue that going with the blue guys is a pretty poor choice. Intel and Rambus are fast becoming the champion of false promisses and exagerated claims, in the tech world. Makes me think back to an article entitled "Why we don't trust Rambus" For the average computer user, if you look at the marketing numbers, wow, Intel now has 367 mhz lead over AMD, perefect, you buy Intel if that's all that matters to you, but then again, I have yet to see any real world benchmarks that give even the 1.7 a clear lead over AMD. So despite the price gap, maybe you do go with a P4, because future applications will be able to take advantage of the big numbers... then again, maybe you want to wait until the real P4 chipsets start to immerge, once Intel has lined their pockets by meeting their rambus quotas.
Personally, with T-Birds even cheaper still than the PIII, I've joined the dark side and switched over. Maybe if Intel can show themselves in a more turstworthy light in the future, i'll go back.