The point I think I was trying to get across was Sonar had a lot of bundled plugins whereas Studio One does not. They don't seem too concerned about it because I think they know many will be installing what they want. So its a bit unfair to compare Sonar and Studio One on that front. Different philosophies.
Fat Channel by the way is very nice now
(had a complete revamp in a recent update) and has got some nice EQ's and compressors included. Also the Presonus channel strip Add-ons e.g. RC500 and VT1 are also very good as well. Not cheap though, I actually won them in a competition.
Yes Scheps OC is great though for sure. Love it too. It is a little CPU hungry as well. So you wont be able to use it on every track and buss and have every module switched on either. But the good news is CPU hit is reduced as you turn off unused modules within.
A good combination might be either bundled plugins on tracks (Fat Channel included here) and Scheps OC on buses.