I have played Mizuno irons for some time - First time I used the old Mizuno T-Zoid pro forged irons, I was hooked. Hot knives through butter with these soft forged cavity back irons. But that was many, many years ago - I have a new set of MP-59s that I play though interestingly, they lack a bit of the "pure strike" soft feel the T-Zoids had, at least for me. This has prompted me (along with my accountant who used to work for Acushnet) to try out Titleist irons and I agree, the AP2s are extremely nice clubs. For my eye, they look like an iron should - thin top line and the head isn't huge - But I can live with anything if the club plays well and feels right - And Titleist has done a great job building in the right amount of forgiveness and feel - Very responsive clubs that reward properly struck golf shots with dependable distance and feel. Now if I can wheedle my accountant into a little trip to the company store on my behalf...
And JoshGiano, Noel, and TT are on the money - Whatever you buy take the time to get clubs properly fit!