I was going through a bad spell and also looked to change from MP60 to a more forgiving club.
Ended up with the MP52. Nice forged clubs with similar feel to MP60.
I kept my MP60 and now my game is coming back I am tempted to get them out again, as they feel a little better and slightly better distance etc.
The longer irons (up to 7 I think) in the MP52 have a cavity to help get the ball in the air and also add forgiveness.
If you go MP52 route, my advice would be to keep the MP60 if you can and you may end up mixing, e.g. 4 to 6/7 in MP52 and 7/8 to PW in MP60. I think I may give this a go anyway.
Hope this helps.