Its hard to beat the Epson K3 machines. The Advanced B&W option is really nice, and you have a lot of options with paper and so forth. The HP Z3100 is also quite striking, but a lot more money. I haven't tried to do any serious B&W on the Canon yet, but it appears to be a capable device.
I'd say for ease of use its hard to beat the Epson.
Thanks, Eric, I had intended to go for the 2400 some time ago, but have been put off by the waste with the inks - this HP offering seems to read very nicely, but there, too, there are problems related to supply of both ink and papers. I get the feeling that manufacturers are so afraid of one another that they jump into the marketplace without having the slightest chance of satisfying the demand that they induce, the priority being to stall sales of the competition's product.
I suppose that this has also been part of the problem with the M8 - perhaps Epson has another similar camera in its pipeline...!
Ciao - Rob C