One $$$ meal in Barcelona: Gelonch? Cinc Sentis? Hisop? Commerc24?
I'd like your opinions on which spot you'd pick if you only had one night to pick from these restaurants with similar cuisine approaches. Noting other posts and advice given, I would note that it's for a 40th birthday, we speak Spanish, and we don't like too stuffy an atmosphere...something delicious and fun, and not 100% touristy if that is possible.
It's sometimes hard to tell from posts whether these restaurants have kept up their quality over the years or are just riding on previous glory.