Aetna? not health insurance but if they are like their auto insurance the y are abusive and a poor company.
Blue Cross? Went with Anthem which is a breakoff of blue cross very very good insurance. Never had trouble with blue cross ever.
Have had BCBS for many years and quite happy with it. It has always had a very good reputation and the PPO plan in our company is quite hassle-free for the consumer. Have had many other plans, too, but prefer BCBS.