Hey and playing off 14 is hard work m8. Took me over 10 years to get there.. :-( The single digit handicap is looking impossible before retirement...
I'm using Mizuno MX-19's with a stiff shaffed Miz driver too. Works well for me although I'm thinking of moving to MX-25's soon....well when I've saved the pennies..
My playing partner has just made that move, he was a 15 handicapper, using 19's and kitted out with the 25's and now he cant hit em to save his life! He's well gutted cause he had all the shafts replaced and re-gripped, lost the serial numbers and now the re-sale value is pap!
Make sure you get fitted if you want the best out of your clubs!