Hi y'all.  The title say sit all.  I have the VSTi that came bundled with X1, and the X2, and X3 upgrades.  What would you recommend for a go-to instrument for percussion tasks?  TIA.  

Battery 3 has a extensive Latin set that is quite good. BFD 3 has a percussion set that has many Latin drums. I use both. I don't know what Battery 4 has. I would assume it too has good Latin drums. 
 
 

EZDrummer Latin Percussion.

I also use Toontrack stuff like EZdrummer, but you do seem to be asking about instruments bundled with Sonar, so..
 
I found some sounds in Cakewalk Sound Centre (under Percussion-Acoustic Percussion) like congas and djembe etc.  It is only 32bit, if that is important to you.
 
There are a few oddments in Dim Pro.  I have the Emu Proteus Planet Earth expansion which gives you quite a bit more.
 
Other than that, I can't think of any others.  There are some loops and one shots in the included Loops & One Shot content.
 
Sorry that I can't be of more help.

Depending when you got X3 and if you have Addictive Drums 2 installed then AD2 Adpak "Session Percussion" is an option.  http://www.xlnaudio.com/products/adpak/session_percussion
 
I've only had it a week or so and still evaluating but so far so good. 

I run the EZX Latin Percussion kit in Superior Drummer 2. One instance for a kit and another for Latin Percussion. The key is to unload the individual instruments that you don't need. That way it loads quicker and is lower stress on the CPU.

I really like Battery 3. BUT, I just a couple days back took advantage of a GREAT deal that had been posted in the Deals forum, where by making a $25 donation to be split between 2 good music charities, I then was awarded a free FOURTEEN GIGABYTES PERCUSSION LIBRARY FOR KONTAKT
 
Please excuse the caps, yeah I was that excited.
 
This library is amazing, and has the most in-depth percussion sounds I have ever seen.   Mallets, brushes, all kinds of different sized cymbals, flourishes, you name it, it's in there.
 
Here it is:
 
http://forum.cakewalk.com/FindPost/3130038
 
FABTABULOUS deal - by far the best $25 I have ever spent on anything related to music.
 
Please note that it does take up to about 24 hours for them to process it all and send you the download links.  Also, there are instructions for the decompression and installation - FOLLOW THEM.
 
Bob Bone
 

Stylus RMX has great capabilities and sounds in this regard.

BENT
Depending when you got X3 and if you have Addictive Drums 2 installed then AD2 Adpak "Session Percussion" is an option.  http://www.xlnaudio.com/products/adpak/session_percussion
 
I've only had it a week or so and still evaluating but so far so good. 

It's a shame XLN stuck so rigidly to it's kit set up, and replicated a drum kit with their pieces. I think they should have supplemented the kit with a few more percussion peice to create the Brazilian sound. As it is, you need a second percussion source to supplement it if you want the complete samba rock sound. It's missing  cuica, a range of shakers for me mainly. I'm not even sure I like the cuica, but it's part of the sound. I can't imagine paying for a shaker kit peice if they added one, so I think they have to have a collection of them.
 
Edit: Guiro (reco reco) too
 

I just picked up Brio from Indiginus, and I really like it. Other than that I tend to use the percussion library that came with the first DFH Superior most of the time.