Should I use NodeJS ORMs/Frameworks or develop from scratch?

I am looking out for some NodeJS ORMs. I have found Loopback and Sequelize. I have tried out both of them, and found them extremely useful for the basic CRUD operations, and to some extend in custom operations also. But, in some of the cases (which are usually the main operations of the app), I usually have to find out a work around with them, and the code looks extremely crappy. So, what would you suggest, use ORMs or to write your own neat code.