Part of the problem is that domain registration and DNS hosting are usually conflated, when they are in fact very different things. Domain registration is more

Part of the problem is that domain registration and DNS hosting are usually conflated, when they are in fact very different things. Domain registration is more a legal discipline than a technical one - Especially when you begin to go into registering international tld's. For registration, I would pick a trustable company to run things for you - Small and personal is ideal. The DNS hosting, on the other hand, is probably served best by a big company with solid infrastructure - Such as the place where you host your main hardware or with a dedicated dns hosting service.