The new features and performance enhancements have me feeling very satisfied...My head is positively blown 
 
Thank You Cakewalk .
 
Kenny
 

I know the feeling. I posted a thread a while back talking about how much I like Platinum. It was because it seemed to do stuff without fuss or muss. It just did it. Now it s even better by being faster. That was unexpected. Yes, I am satisfied too. I am running out of things to be surprised about. It seems the Bakers are wizards.
 
You know what I am very glad you are seeing it the way I see it.  Not because I want consensus but to share the joy.  

Totally agree.
 
Funny how some people on Gearslutz think it's nothing more than a toy

Agree. It is a joy to work with.
Many people on GS seems to think that if it does not have the name "pro" in it, it isn't pro....
All the best.

I too am enjoying Platinum. Working with a desktop, and laptop, that are over 6 years old, and 32bit, I keep expecting my system to break.
It seems as if the code is thoughtfully written. The guru's at Cakewalk appear to make an effort to keep the system requirements as minimal as possible. It's one of the reasons I've stuck with Cakewalk's software since Pro Audio 9 from my Widows98 days.
Cakewalk, and then Sonar, have always been kind to my system. I'm the type of user that has never been able to afford the latest or best hardware, and I always seem to be running at least 3 or more years behind what most users would consider a well spec'd system.

Yeah Kenny,
 
I felt that way also. I think I came in at Foxboro from X3PE.

Bristol_Jonesey
Totally agree.
 
Funny how some people on Gearslutz think it's nothing more than a toy

It seems okay for people on Gearslutz to give opinions about things they haven't tried. I've seen it with much more than SONAR. 
 
There was a thread on Gearslutz about how Neat mics sounded like crap. Only one small problem...they hadn't been released yet, no one had them except a couple prototypes we had here at Gibson. In that thread, I linked to a video that was done at Gibson with Lindsay Ell singing through one. She sounded fabulous (she does anyway, but the mic didn't hurt, haha). Funny, that killed the thread.
 
Back to the OP...I think all the fixes and optimizations have made a big difference, but it seems like Kingston jumped a quantum level in that respect. If you're going to go from X3 to a SONAR 2015 version, Kingston would be the one. I think they may have put WD-40 in the code or something.

People on Gearslutz are still citing problems with X1 as the reason why they don't take Sonar seriously. It's kind of like whining about Microsoft Vista in 2015.

Bristol_Jonesey
Totally agree.
 
Funny how some people on Gearslutz think it's nothing more than a toy

Some of them (especial one ) seem to have dedicated their lives to talk negative about Cakewalk and Sonar......
 

sharke
People on Gearslutz are still citing problems with X1 as the reason why they don't take Sonar seriously. It's kind of like whining about Microsoft Vista in 2015.

well said