Walmart clubs and hadn't replaced them for years. In the last couple years I got a new set of irons, wedge, and driver. I've been scoring low to mid 40's now and the last 2 days shot 39 from blue tees. I was hesitant to replace my wedge and driver because I have been hitting them so many years and felt comfortable. After making the switch I now believe my driver was compromised and my wedge just sucked.
My new irons give me an extra 10 yards per club and has helped with accuracy.