Looking for a few suggestions for a nice, but casual dinner in Amsterdam (i.e. the best food in a casual atmosphere). Already going to Balthazar's Kitchen for one night, but looking for a second but similar restaurant and am worried that De Kas, Marius, Restaurant Simpel and Le Hollandais might be a bit too fancy/not casual enough for my group of 6 friends - thinking about Season's. Price is a bit of an issue, but less so if the food is really good. Enjoyed Lof in the past, but it wasn't great on our last trip. Any thoughts?