So, I wanted to do a little iron testing, so I had my Cobra rep send me a set of MB/CB irons. I haven't played blades in a long time so I wanted to give it a try. After a couple of practice sessions and rounds, I don't find a whole lot of difference in the blades vs my Ping I210s. The Pings are a 1/2 club longer due to the lofts and 10 gram lighter shafts, spin is about the same, and I hit them in almost the same window as the Pings. My misses come up short which is what I expect with blades. So what give is what you get and they are very predictable.
Cobra equipment is very underrated IMO.