Although I don't have SD loaded on this computer, I'm pretty certain you can do exactly what you described in the OP. On the 'Construct' page in SD, in the upper right-hand corner, the 'X-drum' drop-down menu lets you choose any drum from any of the collections you have loaded. You can mix and match to your hearts content. You can even trigger two drums with the same trigger. So if you liked one snare for the shell tone and another snare for the snare wires tone, you can blend them together to get the ultimate sound. I'm new to Superior Drummer but so far, I'm completely stoked. Great tones.