Its only been on for about 20 minutes now so these are first impressions only. It is so much better than the CB6ks. It went on in about 30 seconds. It took longer to get the lock on then to actually get into it. The lock hole must line up just right. I was a little nervous about sizing so I ordered a little big. I figured a little big would be better than too small and unusable. I could not afford to order another if I ordered too small. With that said the ring is just a hair big but very comfortable and not so big that I think it is an issue. The cage is too long and just slightly oversize in girth. Not to the point that it should be a problem its just room to grow. I will not be able to get a full erection, probably not even half an erection so it will still serve it's purpose very well.
The issues I had measuring for the cage(tube) was that I could NEVER get a consistant measurement in length. Even if I went with an average it would have been risky so I went a little big. However, the weight of the device causes it to slip a little forward and this adds a little to the error on the length of the cage. SO my advice on sizing is you don't need to worry to much about being safe. While so far I am happy I would like a little less length but I can happily live with what I have.
Overall though I am happy with the Jailbird even with my errors in ordering. The errors are just that MY ERRORS and not those of Mature Metal. The one issue I did have is that the Jailbird arrived with some black stuff on it that wiped off easily but when I washed the device it became sticky. It was only a minor issue since I did not know what it was and wanted to make sure I got it all off.
I will update this review if anything changes after I have some time in it.