I bought these because I heard they were forged my Miura and look very similar to his CB 301. I have moved from Mizuno blades with R400 Dynamic Gold shafts to these, MacGregor PCB TOURS with S300. The MacGregors are 10 yards longer, slightly more forgiving, softer feeling and I'm getting more spin on the greens. I used to hit my 9 iron 150 yards. I assumed part of that length was due to the R400 shafts. I expected to lose distance and gain consistency with the S300. I'm more accurate now but the 9 iron flight goes 160 yards now. This may be due to slightly stronger lofts but I like it anyway! I always agreed with 'nothing feels like a Mizuno', but these feel better.
(single figure handicap, sadly only an occasional player due to work commitments)