I know which one you tested, but you failed to mention that difference when you said things like "The 800C boasts a nice gold toned casing, more memory, a couple of extra functions like a built in calendar and the ability to beam sms messages to your infrared cell phone, and a couple of other minor goodies like rechargeable batteries vs. the 600C’s use of 2 AAA batteries. " so I was just pointing out this feature of the 800C as well.

You also said "A good price is roughly $50 for the 600C, which I've seen up to $175 on-line, so watch yourself. E-bay has a bunch, and lately they've gone up to about $65 or so on average - Christmas shopping? " ut this was a year ago, one would figure priced have dropped. I only see them on ebay for about $100ish though.. is the price you quoted wrong?
I came across a much cheaper version of the same thing that supposidly works well.. It's by WizCom.
http://www.pricegrabber.com/search_g...a80c3a573a5f4d
The QuickLink is $111, the SuperPen $125 and the Superpen Pro is $199 now (it was $150 last night at the cheapest place, so I'd check back...)
Only difference I can surmize: quicklink has 4MB memory, superpen has 6MB and dictionarys with foreign language translations, and superpen pro can pronounce english words for you. I think i'd go with the superpen cause it's only another $10 after shippping and taxes, and it can hold 3000 pages instead of 2000, even if you dont need the language features..
Do you have a link to the DocuPen?
-arebelspy