Callaway XR OS or Taylormade M2

[Kespo]

Looking to get some new irons and wanted some opinions. I generally shoot in the hundred range so defintely want game improvement. I've heard good things about the M2s but not much about the OS. I have an XR OS 3H I like but haven't had the chance to use the irons yet.

Any opinions on which you prefer? Which is more forgiving ?

thanks