crunchy = there's a fair bit of grain; lots of little sharp edges like a muesli bar (granola bar, for the yanks). Yes, referring to the 2405, it's about as grainy as HP5 I think (I've not wet-printed any yet though will do some this week). I am getting to rather like the stuff though.
I'd like the 3409 as a possible replacement for Efke-25: grain about as fine as Acros/TMX but with (far!) better red response and a more-traditional S-curve.