Yeah, I got a 9cc midband which I chose after weeks of research, and hours in a room playing with 4 types of bands. I picked at all of them, and felt the midband was the way for me to go. Since I dont have to worry about fills since there is a doctor who will fill it, and Im 2 hours away from Mexico.
From what the doctors were saying,is that they determine the actual size on the band by how much you need to lose, how thick your stomach is, and many other different things. Some band sizes just arent right for everyone.
I knew going in, I didnt want the sweedish band. I also heard of alot of slippage and erosion problems with the inamed band because of the thickness of it, and how little give it has. Playing with it, I noticed the port slips off of the tube rather easily, as the midband can also slip off the end, it has a bar which locks it into place. The johnson band was sort of a hybrid looking band..didnt really like it. I liked how the midband was soft yet durable. The inamed was probably however the most durable feeling one..but it was ALOT harder. Of course, the midband is also newer, so there is less documentation. However, my partner had a midband, and shes done great with it.
anyway, just do some reasearch. I don't think there really is much info out there on which is better or whatnot. If there was, I wasnt able to find much besides personal opinions.