ActiveRecord has always felt great to me: yes there are some corner cases to deal w/ but it hits the 80/20 spot, let's you kick out to SQL when you need to, adds a lot of excellent life-cycle related hooks that clean up domain logic, and is pretty easy to reason about

pragmatic ORMs that don't try to hide everything behind a "bundle" or introduce their own query language are great, it's the ones that try to totally "solve" the ORM problem that are hard to work with