My Favorite Sonar Tricks

PeterMc 
If you just want to A/B two tracks in SONAR, solo one of the tracks, then right click the solo button, choose group, then A (or another group name and color). Then right click the other track's solo button (which should NOT be solo'd), and choose the same group. Now clicking either solo button reverses the solo of the two grouped solo buttons at the same time.
 
Cheers, Peter.

Sacalait
I don't have a mixing board.  I'm using Sonar only.  This is what I've figured out and it works on reverb- pretty much regardless of what settings you have in the mixing latency (well, at least 1024 or less).

1:  In the master section I insert a stereo bus and drag in a reverb plugin (i LIKE the Lexicon plugin that came with 8.5 and X1!).  Name it "Reverb"
2:  Insert an audio track and insert the Reverb send
3:  On this audio track click input echo to "On", lower the volume all the way to OFF (vital because it eliminates the dry signal), assign the input to the mic you're using on the vocalist, click the reverb to "pre fader", and adjust the send level to taste.

Because this is a reverb effect you wont notice latency.  In fact if you have the audio buffer setting to higher (like 1024) it almost helps because of the pre-delay.  NONE of my artists EVER complain about latency when I do it like this.  I don't think this would work with effects like EQ, compression, or really anything else but reverb but it works nicely to give an ITB reverb mix to the performer. 

John
Nice tips. Though with the A/B I use exclusive solo. It works well and its easy to do. 
 
I hope you want all to post tips here. I'll take mine in dollars.