I only hit the 7 iron of the 150s, but it was on grass. Found both irons easy to hit and elevate, but I'm a low single digit.
I agree, these irons are very close together and there isn't a great deal to differentiate, but for those who like less offset and a smaller footprint, but still want hollow body in the 4-7 iron, the Callaways are ideal.
I also agree with your comment, these irons address a very small market of golfers.
Also agree on the trade in value. I got the 4 thru AW for $225 after my trades which included mp223s, a couple 5 year old hybrids, and an elyte TD I got as a tee gift at a member guest.
P.S. hate the AW and put my T24 48* in the bag instead.