No experience with that bag specifically but I did just buy the Cart 15 bag and depending on what type of bag you're currently using it might take some getting use to as these newer bags are built with a "twisty" like frame instead of a "solid" type frame. Hopefully that makes sense, lol!
It’s fine if the MB’s ‘feel’ better to you. But when it comes to knowing if an iron is better or not for our game, many of us use data. You said mis-hits don’t ‘seem like that big of a deal.’ Not to be an ass but many of us want to know if an iron is better for our game. Going with only feel, ‘seems’ is why so many myths existed for so long and still continue...like ‘ it’s my putting that’s killing my scores.’
Not being a ‘data guy’ is fine but you have to accept that those MBs may not be the best club for your game. If you’re fine with that that’s ok. Just sayin’...🙂
Another example where Jim has a concept but then proceeds to make false claims. The spine rotates. The thoracic and cervical spine regions are designed to do so. That’s not an opinion. That’s anatomy/physiology 101. I can see where a traditional swing may cause more stress to the spine than his method. But how he goes about explaining it is 100% nonsense.
I just recently bought some Titleist 620 MBs as more of a experiment more than anything and I'm completely hooked now. I started out by only buying PW-8i to see if I could get a feel for them because they're muscle backs and the only irons I've ever played have been game improvement irons up until now. It didn't take long to fall in love with these 620 MBs and the mis hits really don't seem like that big of a deal (specially compared to how you hear people talk about it).
Could I get more mileage out of sticking to GI irons? Maybe, but who knows and I'm not a data guy so I'm not going to be spending any time obsessing over numbers to find out either, and I also don't play enough for it to matter. If I make a bad swing with my GI irons I get a poor result, same thing applies to these MBs, so for me personally I'm sticking with these and buying more of them because I've never hit anything that has sounded so good or felt as good as these 620 MBs! If I had to use one word to describe them it would be "solid"..they are just very solid..solid feeling and they even sound solid...specially compared to my other irons which are very clicky sounding (TaylorMade M5s).