Two very good pieces of advice have been offered: 1. Newer shafts will probably be your best investment and; 2. Take you clubs and hit them along with new and used irons. Iron technology has not changed that much in the last 5 years and you may be able to get a 'newer set at a discount.
I also have a Ping Anser and went to a putter fitting. The fitter watched a few putts and said you don't need a new putter just better alignment and aim routine. Gave me a lesson and I was good to go.
My point is go to a fitter who will provide an honest evaluation.