another repost- anyone been to Costa Rica?

DH and I are thinking of going to CR the first weel of August and I was wondering if anyone had been there before. I found two greta all-inclusive deals- one to Barcelo Playa Langosta Resort And Casino in Tamarindo for $897 and one to Barcelo Playa Tambor Resort And Casino for $701.
I know that it may be smarter to do the cheaper one, but from doing research I get the impression that Tamarindo is a better town with more nightlife.
Can anyone advise me?