The iOS 11 Beta Is More Exciting
At this point, it's extremely hard to recommend iOS 10.3.3 beta. The sixth beta is a lot like the first beta and Apple's got another beta going that's a 1000 times more interesting than iOS 10.3.3.
If you want to try early pre-release software on an iPhone or iPad, try iOS 11 beta. The iOS 11 update is currently in beta ahead of a release this fall and it's loaded up with new features, tweaks, and enhancements. It's also free.
Apple's released a public iOS 11 beta which means anyone with a valid Apple ID can test iOS 11's new features and performance right now.
Most people should still avoid the iOS 11 beta but if you really want to get off iOS 10.3.2, iOS 11 is probably the way to go.