Reaper. Why?
It works with ASIO4ALL, allowing me to use my MOTU ASIO audio interface simultaneously with my AXE-FX ASIO audio interface. Many PC DAWs do not.
It can be evaluated for free with no functional limitations.
It is extremely inexpensive at $60.
It contains no bloat code for copy protection.
It can be installed as a portable app (
all files contained in a single folder) on your hard drive or on a thumb drive that can be inserted into any computer.
It can be used on PC or Mac, with project files created on one platform being compatible with the other (with the exception of AU plugins).
It is in constant development.
It has a well-written comprehensive manual that is updated with every software revision.
It is produced by people whose prime motivation is not money or a corporate bottom line. The original creator made a fortune creating Winamp and selling it to AOL.
https://www.youtube.com/watch?v=vfaQrOeb_F0
They listen to their customers and integrate new features based on feedback.
It is highly responsive and efficient.
It is relatively easy to learn.
It does what I need it to do.