Shame Walts is closed, it's a lovely restaurant.
I suppose it depends what you're looking for. I liked the atmosphere in Blue Lagoon, but not a great seafood lover and whilst there are non-sea food options, I didn't feel an urge to return.
We've eaten in Remys twice and thought the food was delicious both times. Price wise I don't think it's much difference to Walts, and the theme of the restaurant is outstanding. I'd happily pay 20e to sit in there with s cup of tea and a bag of crisps, lol!