I purchased a set of Callaway Titanium VFTs online because of the 1155 MPF rating.  These were listed “like new” from Callaway Pre-owned, but 15 years old.  The VFTs have not shown up yet.  Is the sweet spot part of the MPF rating? Is there anything in the new technology of the Ping G irons (MPF 832) that would be a better choice? Is the sweet spot bigger on the VFTs or the Ping Gs?  Any thoughts or comments on the benefits of either?

My current clubs are Ping i5s with over 500 rounds on them. I have been searching for new irons and haven’t found a club that I like better. Thanks!