OK I've got both good and bad stories. Bad story first, My mum had a lap band and it strangled her osephagus and she ended up in intensive care with an anethetist and ICU doctors sitting by her bed for two days to keep her alive as her internal organs began to shut down and fail. This can happen to anyone.
Good stories - Mum has had another one put in and is doing well. Going really slowly and is getting slow success. Two women at work have had it done and one is achieving great weight loss while the other isn't as she is not doing it correctly.
From what I understand is it is a great support if you change your lifestyle, exercise habits and diet incongunction with the lap band and not use the lap band as an easy out.
I would look into it really carefully and way up the impacts on your life and make sure that you are happy to make all the changes that you need to with the lap band because it really does affect your diet.
Good luck with your decision.