Well, I think Sonar is fabulous - I just don't personally need to worry about things beyond the settings I choose to run with.
And for those who choose to run with 192 k sample rates, or whatever, I with them all the best in their endeavors.
For all we know, the brand new band 'The Bed Bugs' are using X3 to finish their breakout CD, somewhere in East London, inspired by the comping and the ARA integration of Melodyne.
At 54 years of age, having grown up in the hissy world of cassette tapes and 8-tracks, ANY of the available settings in Sonar sound fantastic. That being said, I DID try out a bunch of different settings and DID do some research into it all, and I have chosen what I consider to be the best balance between performance and sonic quality - for MY setup. Hopefully, others find their own balance.
Bob Bone