Well I really think those features are useful, though. They let you get some powerful de-facto load balancing and HA and other complex 'features' without any n

Well I really think those features are useful, though. They let you get some powerful de-facto load balancing and HA and other complex 'features' without any new hardware or much complexity. They give you some easy creative freedom in designing a redundant infrastructure, give you some geo-aware DNS the likes of which I remember paying Akamai a lot of money for years go, etc. But the lock-in problem is absolutely right. I'm also familiar with the aggressiveness of that sales team. I prefer another provider and they were trying to solicit our business by specifically calling out our provider as amenable to a DDOS attack which had occurred. Someone with a simpler setup with standard DNS features will find it much easier to use multiple providers, of course.