The companies that I have worked for never used digikey or Newark as a distributor. We would use places like Future, Arrow, and Hamilton Avnet. Digikey and Newark was more regarded as a hobby outlet.
I will have to make a correction. I just looked and it seems Digikey is rated much higher than they use to be as a distributer. #5 for Digikey, Newark #7. #1 is Avnet.
Interesting list Mike, though both AvNet and Arrow also supply computing solutions which tends to skew the numbers when compared to a company that sells only electronic components and tools. It's a handy list and I've bookmarked it.