For simple audio editing, right now I use Premiere Pro. I know it's weird; using a video editor for audio editing, but it's the easiest for me right now...
So what I mainly like about cutting in Premiere, is that you can easily drag out the clip to regain what you may have already cut out. It's in a really easy-to-see layout of everything, you have all your assets on the left where you can drag them in to your timeline when you want them, and save them in the project panel when not yet to that audio clip. I also really like the simplicity of keyframes for effects and such.
I am making simple music mixes right now, so I need a way to easily cut the clips, drag out the ones I want back, easily apply effects, and so on. I just need more control, as PP wasn't built for editing audio. Are there any (free?) programs out there that specialize in audio editing but act like Adobe Premiere Pro?