I use the ones from TH3 myself and are pretty happy with them. Also use the TSE audio BOD plugin as well. 

yorolpal
First, buy IK's SVX now. Then next month buy Spectrasonics "Trilian". That should keep you occupied and happy.

just today, I was tracking down a clip on my bass. I was hoping is wasn't my V-Bass Pro.
it tuned out to be my IK AmpliTube 4 VST3. on the track I was recording. It wasn't even on, I just use the tuner on it. I installed the older version. VST Same thing. 
 
If you want to use a modeling amp rig as you're recording, the forget then IK stuff in Sonar at least.
I still works fine as a Bass plugin mod.  
 
I got my V-Bass Pro refurbished on eBay some time back. it's nice with the free software. 
So I guess I'm with the hardware guyz on this one... 
 
Peace!