I've come to the conclusion that based on my slight in to out putting stroke the Rossie mid-mallet I'm using is completely wrong for me. I had no idea about this stuff when I got it but now a lightbulb has gone off on why I routinely push putts right of the hole.
I went to Golf Galaxy yesterday and tried a bunch of different blade style putters and the M-CRAFT II felt incredible. I'd like to also try the IV before fully committing but I'm almost confident my putter next season will be one of the two.
The Rossie S model has a slant neck which will give you similar characteristics to a IV or comparing mid-mallets, a V. I like my Rossie S, but my eye does not interpret alignment as easily with the rounded shape. The IV sets up much more intuitively for me, as a long time blade user. And, the milled feel is impeccable.