Sonitus reverb is perfect for me.

I do use the Sonitus in X1 on occasion.

I tried alot of reverbs until I tried Redline reverb. It all I use now. On everything.

I used Pantheon for years, and liked it, after a little EQ.  I felt that I really got to know it well.
 
When I got X1 I used Perfect Space a lot, but kept Pantheon to use when I was tracking.
 
Since X2 I used Breverb most of the time.  I still use Perfect Space for some things, but really like Breverb.  I haven't used Pantheon for ages

I'd use Perfect Space if it was 64-bit, but BitBridge is way too unpredictable in my experience.
 
There is a lot of praise for Breverb!  I will start using it more.  I hope it remains part of Sonar moving forward.  Oh, and I wish they arranged the presets better; like by application, rather than alphabetically by random titles.
 
Thank you all for your opinions...

Spaces Convolution Reverb 64bit by EWQL is all i ever use.

I've got some good results from Breverb, but ever since CSR has gone 64 bit, I'm using them more and more.
 
I'm even re-visiting some old projects, pulling out whatever 'verbs are there and using CSR in their place.