If I had to choose only one DAW, it's Renoise without hesitation. What a masterful piece of software, a real diamond.
But I also employ Bitwig, Studio One and Mixbus 32C quite a lot. Studio One being my default goto mixing console and audio file arranger.
For jamming and song writing I mostly use Band in a box, have been using it on and off since the Atari ST days in the early 1990's. I wish there were more softwares like BIAB on the market, that offered the user to just write down some chord sequences, choose a style and hit playback. Even better would be to have the Yamaha-style arranger keyboard features crammed into a solid piece of software, so you could just build a style, hit playback and then control the chord sequence in realtime by striking chords on your midi keyboard.