I go back to the time, like many here, when Cakewalk (by Twelve Tone Systems) was a purely MIDI sequencer. You could play external wave files, IIRC, but I don't think I ever bothered.
And there were no VST's of any way, shape or form, and you simply had to hook up to an external synth or use a sound card with synth or GM capabilities.
I also go back to a time when I had my Tascam 244 portastudio. I loved that thing, back then...
When Cakewalk started to implement hard disk recording it wasn't until I joined a band that I even used that option and it was still a MIDI sequencer to me.
So, I guess that if a few peeps here followed a similar route to me, then you may argue that Sonar, as it is now, is still a "synth based" "DAW." ESpecially since there are so many VST instruments available.
But as Rob says, he uses Sonar as a tape deck, which is exactly what it is, too.
The best of both worlds, not biased for any kind of music production really, as is the way with most DAW now.
At the end of the day, if we own and use Sonar it is exactly what we want it to be. A box with many tools, for many jobs, whether we choose to use them or not.
ooohhh... I got all wordy there... Time to get me coat