BCBS-basic vs standard

Starting Sept 1st I will be cover by BCBS for fed employees, but I am having a hard time choosing between the basic plan and the standard plan. I was told the only REAL difference is that one has a deductible and allows you to go out of network (with less beneifts coverage of course). Either way I was told they both cover the surgery and have the same requirements. I basically want to choose the one that will give me more bang for my buck and would cost me less out of pocket when it comes to bariatric surgery. Does anyone have suggestions or know first hand of the financial difference? If it helps I am hoping to have gastric bypass with Dr Blackstone. Any feedback would be appreciated.