Digital BW, The Print

Hey Folks,

I'm ready to take the plunge into a dedicated B&W printing system. I 
currently have an Epson Stylus Photo 750. I need some advice 
regarding which way to go:

Should I, a)make my 750 a B&W printer? or b) should I pick up another 
Epson to use for B&W?

If I go with a, then I'd get a CIS system and use the MIS inks for my 
B&W prints and add another printer for color (possibly the C-80).

If b, then I'd appreciate some recommendations. The ones I'm mainly 
looking at are the Epson 860 and 980. I believe they're both 4-color 
printers and that they're supported by the piezo system should I 
decided to go that route. Is there any appreciable differences in the 
output of the 860 and 980? I only print 6"X9" so I can appreciate 
that the differences would be minimal. With option b, I could still 
get a CIS for my 750 and explore other color inksets such as the 
Enhanced Generations inks.

Well, I think that's about it. I'd appreciate any words of wisdom the 
group is willing to share.

Sincerely,

Mark