Digital BW, The Print

Hi all,

As I posted earlier I've been planning to dedicate a R220 for B&W, next 
to my 2100 for color prints. But what's still bugging me is the lack of 
A3 printing with the R220. So I've been looking around for a another 
(2nd hand) Epson 2100 and it looks like I can get hold of one for about 
150 euro (the R220 does 90 euro over here). 

I'm happy to pay that extra amount, but what's slightly holding me back 
is the fact that there do not seem to be no spongeless cartridges for 
the 2100/2200 (plan to use the MIS UT-7 ink set). I've no experience 
with refilling so far, so I'm not sure how important that is. Seems to 
exclude to play around with inks (e.g. changing the ink of the Y-
position).

Any advice or other considerations?

Joost