Sensicore or graphite

Towards the end of this season, I started getting major pains in my thumb that was compounded fractured when I was much much younger. I currently play Mizuno MX-25's which I really do like. But the pain in the thumb is almost too much on a full round. Which do you think would benefit me more, just getting sensicore installed in the stock dynalite shafts, or doing a total switch to graphite? I see golfsmith has attack lite iron shafts .355 which I could afford to through in them.

I can tell you that I got the Sensicore inserts on my AP2's and I have been VERY happy with the decision! I have never really liked graphite shafts on irons, just me I guess...

I have the Attack Lite shafts in my irons and I love them. I used to get tendonitis (tennis/golf elbow), in my right elbow and switched from steel to graphite. My pain went away immediately. That being said the Attack Lite is a 66 gm shaft and your stock steel is likely 120 something so if you switch them out they will feel different. You could weight the heads to get the same swing weights as your current clubs but even then the overall weight will make them feel different. You might like the feel or not, I love the feel of mine.
If I were you and I liked the ball flight and feel of the irons as they are, I'd go the Sensicore route. As an even cheaper alternative to Sensicore you can go to Home Depot and get some backer rod, it's the foam cord looking stuff they use in expansion joints in concrete. According to the guys who use it, it's the same thing as Sensicore at 1/10 of the price. Then you can put it in and re-grip.
Most people will tell you that Sensicore won't reduce the shock of impact anywhere near as much as graphite will, but it's certainly cheaper and if it doesn't work, then you can switch shafts.
Just some thoughts.

A manufacturer's rep cautioned that Sensicore inserts can attract moisture, and may lead to rusting. If this is true, I suspect moisture problems would be greater in coastal Florida than in Arizona desert.

This rep claimed that soft inserts on the back of clubheads absorb the shock much better than Sensicore. These inserts include Cleveland Gelback, Titleist Elastomer, and Ping S56 insert. I guess that's one of the reasons I like my CG14 wedges.

I love graphite in woods and hybrids, but it feels funny in irons.

Any clubsmiths or teaching pros have views on Sensicore vs. soft inserts for absorbing shock? Also, what is "life" of the soft inserts?