Matrix Q85 Shaft Question

[Hope]

I have a question. Can anyone tell me about the matrix Q85 regular golf shaft? I have a set of Adams xtd irons with these shafts and my question is are they good shafts?

[iacas]

http://www.adamsgolf.com/products/irons/xtd_irons.php

http://www.matrixshafts.com/models/irons/program-iron.html

They're likely a very good shaft. They're lighter than most iron shafts (at about 85g), but the text on the site says " Designed for the serious player , OZIK PROGRAM HD iron shafts are the first iron structure in golf to incorporate HD technology. After advanced DE analysis of the leading steel iron shafts, Matrix engineers discovered inefficiencies that are manifested in shaft instability and dispersion. To combat this inefficiency Matrix head of R&D; Daniel You, engineered the OZIK PROGRAM HD iron shaft to be more stable and launch progressively higher as you get into the longer irons. Additionally, OZIK PROGRAM HD irons are designed to add 12% more spin to offset the loss in spin rate caused by the new USGA groove rule."