I have been playing for 20 years and I recently went out to buy a new set of
clubs. I went in open minded and hit everything they had--it was a big shop and it took me nearly 4 weekends to narrow down my finalists. I was professionally fitted ---well as good as it gets at a busy name brand pro shop (swing speed, lie, ball spin, etc). The fitting narrowed down my choices quite a bit. The last few options for my choice boiled down to personal fav (which really translates into long mid/high accurate shots), feel when I struck the ball well and feel when I didn't (oddly equally important to me), and need.
Although I have played a fair while, I have never had time to get better than an 8 handicap and I have had periods where I couldn't play for years at a time and at the time of my purchase I was an 18 handicap. Even when I played off an 8, I can never remember needing to shape shots all that much. I have always considered the hardest shot in golf to be a pure straight shot. About the only time that I attempted to shape shots was when I was behind an obstical that I really shouldn't be behind in the first place. So for me, if I could get a club that promoted straight shots I would be more than happy.
lots of things to consider, but even many PRO's on the tours don't play true blades--they may be forged but many are designed with forgiving features... I have never understood, why someone who gets really great at hiting iron shots decides that they should try to get a more difficult club to hit---shape shots?!? Hmmm.... If I were on the jury, it would still be out. I am willing to bet that all the tour players could hit cavity backs just as well as blades--in fact I bet that their scoring averages wouldn't change in fact they might even get better!!! who knows...
Your choice, don't let your decision be influenced too much by shaped shots. You can still shape shots with cavity backs, just not as well.