THanks for that Tom. The 17x22 is around the same as A2, so that ticks that box.
What I've found interesting (and eye-opening) is that some people are going for the 3800 as it's actually better value than say buying a 2400 + equivalent amount of ink

. I guess it just depends on how much printing I'll be doing, but the promise of A2 prints is very seductive...