I found if buying new froma retail store, there really isn't much difference between oem and retail boxed.(If buying from an individual, I always go with boxed) On the mid-lowend market, the difference between retail and oem isn't that much. I bought a celeron 600 retail for $89 when the oem version form the same place was 72. I found the sub-100 chips are usually the case. I bought my PIII-700 as oem and my previous chip, PII-400(when that was the sh!T) as oem and haven't noticed anything different in quality. I would just say buy from a company that you are happy with or others are happy with, then no matter what style you go with, you will b fine. In my own cases, generally if the thing worked when I first started it, it works for a long time. And I mean things without moving parts liek CPU, memory, and motherboards. Oh yeah, you do usually get a cool little case sticker with retail cpus, with oem, you need to get one seperatley.