As soon as I started using Battery 3 I stopped using anything else. I don't even have Session Drummer installed on my current system.
 

I never use Velocity (cut down version of DR-008 included in Project 5)  I don't use Session Drummer or the SI-Drumkit either.
 
I do actually use TTS-1, but mostly as a placeholder when I am trying to make a "music - 1" track to jam to.  I have also used the Roland GrooveSynth for electronic drums and percussion, but rarely.
 
I have SSD3, which sounds fine, but I never seem to use.
 
I don't use the Sennheiser DrumMic'A much either.
 
I also thought I would like the Dry kit for AD, but in practice not so much.
 
 
 
 

Further to my first answer.
 
As other have said a lot of what i have gets used in small ways. I am glad to have Kitcore working again because I find the Luis Conte percussion kits very useful. Some of the other kits fill gaps too.
 
I have used Session Drummer on the odd occasion
 
The two "never used" I should have mentioned in the original post are Battery and Arturia Spark, both of which I would not have bought if they did not come in a bundle. I can't see these ever being used by me to be quite honest. Battery's acoustic kits are far below the standard of NI's kontakt kits and Toontrack and BFD. But if you are into electronic drums and EDM I can see that these programs would be very good.

I actuallu meant to say si- drum. I actually use SD3 from time to time

Sycraft
Basically everything that is not BFD3. BFD3 > all.
 
Seriously, since getting it I have had little interest in my other kits.

 
+1 here.
 
I have EZdrummer, Session Drummer 1 & 2, Addictive Drums, Steven Slate, Kontakts Modern Drums (and others) Battery 4, BFD Eco and BFD2 but now I only ever use BFD3 as it covers all bases most handsomely
 
Steve

Kev999
As soon as I started using Battery 3 I stopped using anything else. I don't even have Session Drummer installed on my current system.
 

I used the original version of Battery years ago and absolutely loved it. The whole concept was intuitive to my work flow. I would go there again if I wasn't so heavily invested in AD.
 
Rocky

Studio-wise, Superior, always! Just playin' around, AD2 and BFD. I used Battery 3 for the longest time with custom drum librarys. With the library I built of EZX and SDX kits, Toontrack pretty much covers anything I do. I did use AD1 for live performance because it loaded so fast and was low on cpu usage. AD2 now uses a very noticeable per centage of cpu power so I bumped it out and replaced it with Superior. I figured I may as well since AD2 was eating up as much cpu as Superior.