I play exclusively with a set of irons made my RAM in 1980. Golden Ram Frequency Matched Tour Grind muscle back irons. 2 iron - PW. I bought the set off ebay for $50 14 years ago to practice ball striking on the range. The more I practiced with them, the more I loved them. I started playing practice rounds with them and absolutely fell in love with being able to work the ball either direction and more than anything being able to control trajectory. The feel was amazing, especially pitch and chip shots inside 100 yards with the wedge. Spin was great too.
I've now been playing with them for over 12 years. I've had other sets of irons over the last 20 years, and I always choose these. Just sold several other sets of irons I never used and just kept these. My handicap is down to 2.5 and I have shot two under par rounds in the last month.
Back in the day, RAM was ahead of their time. An off the shelf set of frequency matched, balanced, weighted, and spine-aligned clubs was high end. That's why they feel so consistent all the way through the set. New irons today are just epoxied so the shaft logos all are turned the same direction. Just pumping out expensive mass produced irons with no thought to frequency matching, balancing, weighting, lofts, spine alignment of shafts, etc.
I had a set of irons once that I loved the 7 irons and pured it a mile, but the 5 irons I couldn't hit for anything. The others were inconsistent. Come to find out, it had to do with inconsistency of weight, balance, and spine alignment of the shafts
So, in the end I bought a really nice set of expensive irons back in the day on the cheap because people dismiss them and the demand is low. Once I tried them, I'll never play anything else. Granted, given the loft differences between older irons and newer irons, I don't hit them as far as some newer sets, but I know the distances I hit them and they are consistent. My distances on full shots are:
I also play with a Ping Zing putter I've had for over 20 years. I also play with a new RBZ Driver, a Cobra Super Steel 3 wood, and a Mizuno 17* hybrid. And a Titleist Vokey 54* SW.