Anyone who hasn’t had a crack at Reaper yet, definitely worth a go. I have pretty much stopped using Sonar for it now. Occcasionally I still use Adobe Audition, mainly because I know it inside out. But the more I learn about Reaper, the more I realise how freakin great it is. Uncrippling shareware, and to buy the full version is only about $50US. Download is only about 3meg too.
The one thing that has absolutely sold me on it is the amazingly customisable effects settings. You can pretty much organise all your plugins any way you like.