Ok, here goes!
I had a band fitted in April 2009. I am 5ft 10, so a giantess compared to you, lol.
I did weigh 19 stone and ate way too much. I now weigh around 12 1/2 stone, so only half a stone less than you but perfect for my height.
My op went really well and from day one my portions shrunk. I lost most of my weight in the first six months and have been maintaining for quite some time.
I'm a moderator on this site so if you need any help with anything, you know who I am.
There you go, thats me. Good luck on your journey xx