P-Theory
Sometimes there is just too many options to digest.
YES YES YES!!
All that matters is the emotional impact of the music. If you used nothing but ProChannel EQs or nothing but Waves of Universal Audio EQs, I believe no listener would care, or even notice. They want a hook that sticks in their mind.
That said, I also believe that if someone wants to use a plug-in because they like the way it looks, then that's the plug-in they should use. Inspiring visuals might very well impact the music more than specs.
I think perhaps one reason why people often use the plug-ins bundled with SONAR instead of third-party alternatives is because it speeds up the workflow, which at least for me is crucial for capturing inspiration...and the inspiration is what people hear, not the plug-in. There have been many times when I put in something like a Sonitus effect as a placeholder with the intention of replacing it, but never replaced it because it sounded just fine when it came time to mix. If it ain't broke...
One of the laugh lines I use at seminars is "No radio station ever called me and said 'We were going to play your record,
but you used a solid-state preamp on the lead vocal!! No way we'll play that sucker now!'"