Thanks Eric (I can only get the first link to work,,, but I get the gist - [into the Lexmark routine again ?!?!]).
As a home machine, 'all-round' cost is an issue, which includes ongoing inks/toners etc.
Bearing this in mind, what are the alternatives ? I don't mind paying a bit more for the machine if it works out cheaper after 6/12/18 months.
I like the idea of a separate Black, both for 'colour' quality & that 80% of my stuff will be mono.