I find Pro Tools to have the easiest leaning curve of all the DAW software by far. It's logical, elegant, streamlined and the workflow is speedy and efficient.
Bear in mind the limitations though (all DAW software has them); 32 audio tracks, no Plugin Delay compensation, a slightly stunted MIDI functionality being a few.
Bear in mind, that all audio and MIDI sequencing software is complicated and has seemingly endless functions and possibilities, so no matter what you get you're gonna have to do a lot of practice, research and a bit of hair pulling as you get to know it.
Peace
the tortoise