so, for the three years it DID work, here's my thoughts:
PROS: individual ink tanks! for ANYONE who does even a marginal amount of printing, you should invest in a printer with ind. ink tanks - it's just common sense. i can't understand why other printer companies haven't followed suit on this kind of thing. i definately got my money's worth out of the 6000. i have printed hundreds of photos that looked pretty darn good, even without the optional photo ink cartridges. keep in mind, i've had nothing to compare them to. :) it has a lot of options to print your documents/photos, etc., so for the advanced user, or just a regular user, interface is pretty easy to use.
CONS: color photo printing in highest resolution mode takes FOREVER; about 8 mins to print a page with two 4x6 prints on it. so, it's not the fastest printer, by any means. and, it's noisy, too. it cleans the print heads all the time, and while printing, actually shakes the monitor and desk hutch it's sitting on. yowza! for general purpose printing, i would recommend using good paper and something other than the "auto" setting.
overall, it's been a great printer, but it's time to move on to newer and better technology! my biggest piece of advice to anyone buying a printer: get one with individual ink tanks! it's just common sense!
The interface was in parallel, so some of my observation may not apply for USB version. The first page is always fast, but the next one will have to wait, and wait (For what?). That is the only cons I found and complain about. The speed is kind of slow at top quality, hey, that is acceptable. :)
The individual ink is a big plus. I found myself changing yellow more frequently then the other two.
Finally, the i850 seems to use the same inks as the BJC6000, which means i850 can't exceed the quality on the horizon direction.