QTR-Quadtone RIP

I think my Epson R1800 is in need of replacement. I love the quality  
of the prints; that is, when the heads aren't clogging up. Does anyone  
have suggestions for a high quality B&W replacement? Also, is there  
any consensus on replacement continuous feed systems. I've been using  
MK3 carbon ink cartridges and recently they have consistently failed  
to print. This happened when their cartridge design changed to smaller  
ones with no peel-off seal. Any one else had similar problems? Thanks  
for any help.

Ola Olsson