The kinking stems from the hose not completely uncoiled. I think that's the best I can describe it, but if at the beginning of a job, I completely uncoil the Flexeel, I have never had it kink on me.
One thing to watch out for is that when you have an air tool attached to the Flexeel and constantly move the tool and do NOT watch the orientation, you can create an effect as if you're coiling up the hose, which may lead to kinking. This can be remedied by making sure your hose is as straight as possible by twisting the tool in the air connector to relieve the coils you're inadvertantly putting on the hose. The swivel connectors I mention in my earlier post make this A LOT easier to deal with.
For me, weight, bulkiness, and abrasion resistance are my top three issues with air hoses and the Flexeel is top notch in all three. I have dealt with the kinking if you can call that an issue. In my opinion, it's just part of knowing how a certain tool performs and how to remedy it. To be fair, I've had the Goodyear hose and it's a nice hose... very well made and never kinked, even when not completely uncoiled. For my uses though, it was heavy when working specially with crown molding or texturing a ceiling. It was bulky when I coiled it up and it didn't clean up as easily as the Flexeel. In the garage, the Goodyear hose started out black, but once you've pulled it in every which way possible against the ground, it picks up dirt very easily, and becomes gray in color. Small things here and there I've noticed with the Goodyear hose that I do not seemingly observe with the Flexeel hose. The Flexeel has a semi-slick feel to it and for clean up I just wrap a towel around the diameter of the hose and pull it through and coil it up. With the Goodyear, the rubber casing wasn't as easy to clean up and provides a bit of resistance when performing the exact procedure.
My number one reason for preferring the Flexeel: weight.
I apologize for the long post, but I hope it clarifies/answers your question.
Good luck and keep us informed of your choice and perhaps an update once you get the your choice of hose. I'm always a sucker for reviews, both good and bad.
Thanks,
Mike