Ping Putter Head Covers

Do I need to buy new golf clubs??
I am 52 years old and played par golf in high school but played
less and less thereafter due to various reasons.
I have a 10 year old set of callaway big bertha with stiff shafts
and the grey headed woods. my Putter is a new ping in the blue.
head cover that everyone uses.
i had the good fortune or misfortune of playing a round of golf with
a new set of pings with standard flex shafts and it was a totally different experience than with my set.
I am going to play 2-3 times a week this spring and summer and
am trying to decide whether to use my current set or start looking
to modernize.
any suggestions???
Take advantage of the newer technology you will enjoy your game more