What capabilities is it you are looking for? Peak isn’t going to provide you much more than stereo recording, effects processing (I like that you can apply them to the incoming audio) and cut/copy/paste type editing. For a better editing experience, the production suite type stuff (like Logic) would be better.
I think most of my issues are related to my older VST plugins, but the whole product is a little behind the times. It was just the closest equivalent I could find to Soundforge (of which there really is none).
I’ve used Soundtrack Pro recently for this kind of stuff, multiple mics sound input and such… it’s not without it’s issues, and some of them make ‘live’ type recording a problem unless you can dedicate the machine to record and not be touched at all. For anything. I like the ability to multitrack record, makes it easy to isolate things later if you choose to. Do what I do, make sure you have a backup running too. 😉