Digital BW, The Print

The new HP PhotoSmart 8750 printer has a nine-color system with three blacks (black, 
dark grey, and light grey). Taken with a grain  of salt, the web site states that the prints 
will last over 100 years under glass and over 200 years in storage. 

The inks are dye-based.

I've heard that HP printers have the print head on  the ink tank and thus would negate any 
problems with print heads clogging and rendering the printer useless. Does anyone know 
if this is true of all HP printers?

Has anyone had any experience with HP printers in general? And specifically B&W printing?

A quick review I saw said the B&W quality was very good, but I have no idea of this 
person's qualifications to make such a judgement. I'd post the review but now I can't find 
it. Oh, well.