I think so. I had the same idea the other day, but I reconsidered it. I have NI's 'Drummer' libraries and SSD4 EX, they sound great but are very CPU expensive and take a little too long to load, so I wanted to get a lighter drum library to use sometimes, but I missed out the good deal on EZ Drummer last year, so I considered SD2. But...it might not sound as good, especially when SD3 is already out there (with sonar pro). I also bought BFD Eco when it was $20 or something, but I didn't like the sound at all (especially the machine gun effect). I think I'm waiting for another EZD sale.