I’d definitely short list the Unit 67. I’ve got one and it’s the closest thing to a grab & go pedalboard in a small box I’ve ever encountered. Not a bad sound in it. It just sounds good with everything. Other good “always on” compressors to consider if you want a little more color/character (based on the ones I either currently own* or have tried**) are: Ovnifx Smoothie* 3Leaf Pwnzor* Markbass Compressore* Mad Professor Forest Green* Doc Lloyd Photon Death Ray** Of the above I’d say: the Smoothie is the most versatile; the Compressore the most subtle; and the others fall somewhere in-between. They’re all good choices. I’d be hard pressed to pick a favorite. But FWIW I’m almost always using the Unit 67 - and not just for its excellent and elegantly simple compressor stage. And when I’m not, I’m most likely grabbing the Smoothie if I want to use a compressor.