Never tried Studio, but I have to agree Odoo is pretty nice if you want something that makes simple things easy, while letting the complexity grow quite a lot,

Never tried Studio, but I have to agree Odoo is pretty nice if you want something that makes simple things easy, while letting the complexity grow quite a lot, since you can write fully custom Python backend code and/or frontend JavaScript/HTML if you need it. The main drawback in my experience (which is a couple of years out of date) is that once you started pushing the framework to outside what it was designed to do (I'm talking about being far from CRUD), it's less likely that someone has written a blog post or module to do it than in Django, so you'll have to do it yourself. But it was a reasonably rare event, and I'm confident we saved quite a bit of time on the whole. (Disclaimer: worked at an Odoo partner company for a few years. I don't currently have anything to do with Odoo except a few friendships in that company.)