I also made a test exporting a midi-only song to S1, VSTis only, and S1 sounds hifi but sterile to me, it lacks the warmth and quality that sonar has.
I really tried to like s1 but failed, I feel underwhelmed and uninspired by it, feels n looks like a sonar/cubase light edition to me.
Just for a start it has no Dim Solo, seriously? I can't live without dim solo.
Where is my Shift+f, shift+d? W? R? nah! The navigation sucks, can't even select the time clicking on a track.
Besides the clips look like crap and make me feel that my music is crap too.
Just looking at those clips depresses me and any inspiration I had vanishes.
And nothing like pro channel? even cubase has some sort of prochannel... drum replacer? and so on... etc etc.
Perhaps many people like s1 because it's simpler and easier to handle, that's what the new generations like, right? My drummer uses cubase because sonar looks too dificult for him.
But sonar IMO is more advanced and it may look overcomplicated for some people.
I guess sonar is not for everybody.
I seriously regret buying Studio one (even cheap and on sale), waste of money, big mistake, now it is collecting dust on the shelve next to cubase!