On-line printing services

[Bob Shell]

The magazine I work for these days, Digital Camera Magazine, wants to 
do a roundup and comparison article on the on-line printing services.  
I'm not writing it, but I offered to help the writer by getting some 
opinions.

I'd appreciate feedback from people who have used such services for 
ordinary printing jobs, which I'll define as 4 X 6 up to, say, 8 1/2 X 
11 prints.  I'm primarily interested in print quality, but speed of 
service is also an issue.  Since we're a USA publication, we're 
interested in services in the USA.

Thanks in advance for your feedback on this.

Bob