Aetna or BCBS

Hi everyone. I am hoping to have wls soon. I am in the pre-op testing stage. I had all the test need except the sleep study, to be done 3/2. I'm trying to determine which insurance company will pay for my surgery. Both consider the Lab-Band experimental and I don't want to have the RNY. I have Aetna and my husband carries me under his Blue Cross/Blue Shiled plan also. Can anyone give me some advice on this?