It is best for Mr. Polanski to choose the HMO-POS plan.
Explanation:
Mr. Polanski can choose the HMO-POS plan instead of HMO plan. The HMO-POS plan has all the features of HMO plan. In addition to that it allows Mr. Polanski to choose some of the providers who are not in the HMO network also.
However, for this, he has to get prior referral and authorization from his PCP before visiting the providers. Though this accounts for some deductibles and premium separately, this plan is better than HMO plan.