sdandrea1 I preferred the i3+, but I can't remember why. Maybe the color of the badge? Here's some 411 Looks like the i3OS = i3+, and i3 blade = i3+ blade.
Luc_Van_Daele I3-OS has a bit more offset than I3-blade so the blades are more workable; It says I3-OS has a larger head than I3-blade but putting both side by side it's hard to tell the difference. The + versions have reduced bounce. I3 blade is still my favorite iron sitting in both my bags.