I've only ever used Sonar, all the way back to Cakewalk Professional 3. The only other DAW I've installed is Reaper - and I only use that for one specific thing. It has that cool tempo/pitch slider control which is great for figuring out licks and so on from an audio file. Being able to slow things down and retain the pitch with just a simple adjustment is a very handy tool.
I still use Adobe Audition/Soundforge for deep editing....I've made a lot of multi-samples over the years, so I use them for that, but I've never considered switching DAWS. Sonar does everything I need to do as far as recording midi and audio is concerned, and it's been a very stable platform for me.
Now buying lots of hardware...Well, ya I'm guilty of that, but you NEED toys man!...and I like hardware. Hands on baby! I like it that way. You just don't get the same feeling from buying software.