Digital BW, The Print

I'm thinking of picking up a Epson 1400 while they are on sale for $200 and I was wondering whether I should go with refillable carts or a CIS/CFS system.  Some quick info:

- I've used a R280 w/3MK-3Y EB-6 last year and enjoyed the results.
- I'm thinking I might be experimenting with some of the C6 dilutions instead this time.
- I don't print a lot (probably twenty 13x19" in a year would be a lot for me)

Based on my low print numbers and fact I might experiment with more than one ink set I'm thinking carts is the correct answer, but I'm willing to be talked into a CIS if it makes sense.

Thanks!

  Ken