I agree with these guys - it's got to be the MP 57's! Much nicer feel of the face than the MX range, even though the MX200's are also forged. I recently hit an MX200 on a demo day and was very pleased with my MP purchase, they feel alot softer and I lost no distance.
I have a similar handicap to you and have the MP57's from PW up to 4 iron, and like Deemac I have replaced the 3-iron with a hybrid club.
One thing worth trying though - I cannot rate the new MX700 hybrid highly enough and I have replaced my 3 iron with a 20 degree model, it is so easy to hit you won't believe the loft on it!