I've switched about 50% of our internal applications and all of my side projects completely from ActiveRecord to Sequel and it's an absolute joy to to work with

I've switched about 50% of our internal applications and all of my side projects completely from ActiveRecord to Sequel and it's an absolute joy to to work with once it's fully migrated. The main reason we started using it the first place was composite primary keys (not supported in AR, at all), and we've never looked back!