Avid Pro Tools Studio Perpetual

I've been using Protools since the early nineties, alongside Logic and some other DAWs along the way. PT is an industry standard and so the main reason I use it nowadays is so I can exchange files easily when working in a team. It is more precise and robust in the way it deals with detail and sync compared to Logic which is more for creativity and can be a bit fluffy around the edges on a technical level. My main gripe with Protools is its inflexibility - you can't reassign the keyboard shortcuts for example and the way you have to lay the screen out is sometimes not ideal. But apart from that it is a fully mature program that you can do whatever you want to with and it works very well.