Got the 5 iron and it is sweet. Carbon looks quality and understated, topline is tidy/not too thick, sole is on the thinner side of average, pretty flat with relief front and back. The sole looks like Blueprint T and T150 had a baby, same or maybe a bit thinner than MP 243 or T150 from I remember. Feel is very smooth with some pop, deeper/more solid than i230 IMO. Very forgiving, generous but not offensive offset (5 iron only, I plead the 5th on all other i240 irons) and very workable on a range mat. My normal shot is a mid-high baby fade, high baby draws with the i240 all day which is not a bad thing with a long iron. I was also able to hit power draws and mid-flight mid fades. Was not able to hit low fades which suggests the CG is very low. My miss is a thin miss so I don't mind. But we'll see what happens when I need a knockdown to escape trees, hah.
Overall, I see no weakness in i240. Pros are playing it so there is no ceiling. I think an aspiring 25 hcp with a coach and a plan could play these and have a ton of fun.