Looking for some advice on whether or not it's time to upgrade my 15 yr. old Titleist 990 irons. I play about a 12 handicap on 8-12 rounds a year. Debating whether or not it's worthwhile from a scoring/feel/distance perspective to upgrade to 714 cb. Have about a 10-yd step in my irons PW-130 yds -- to -- 4-Iron-190 yds. Any thoughts or insights?