Vacation thoughts: Puerto Rico vs Dominican Republic

[lala646]

DH and I are planning a trip for the last week of February this year, and trying to decide between Puerto Rico and Dominican Republic. Neither of us have been to either, and are looking for a relaxing trip. I'm still having a lot of knee issues following a somewhat unsuccessful repair surgery this summer, so we're talking beach front/lazy river rather than hiking/strenuous exploring. We're not really drinkers, but are open to all-inclusive suggestions of anyone had particularly good experiences and want to share. Thanks!