Hi!
Well, one difference I’ve recently learned about these two drum programs is that EZD2 (EZDrummer 2) comes with processed drums while SD2 (Superior Drummer 2) is pretty much dry (unprocessed). I’ve both read some articles on the net and watched some videos on YouTube about this difference.
This means, essentially, that EZD2 is great for songwriters that just want to fastly get a beat going and add some fills, etc, all very fastly done in a DAW or Solo and while playing their guitar/synth, whatever and creating their music… So they have great sounding (processed) drums already from the start! So, it will sound nice and inspire you when creating a song, instead of using dry drums which usually sound a bit dull and thus doesn’t “inspire” you much, etc…
Sure…EZD2 is also great for mixing its drums, etc but SD2 gives much more control and variability, for example you can control cymbals a lot more, thus you can Control OH and also Room mics (ambiance) a lot more with SD2, bleeds, etc, etc. That’s very important when actually mixing drums in a song (in your DAW), to be able to control every little aspect there is to get the “perfect” balance (volume levels), toneshaping (EQ, compression, saturation, etc), etc.
But even though I’ve moved over to using SD2 some time ago I’ve still found a very nice use of EZD2 in my Cubase Projects and that is the feature that you can easily find beats, fills, etc within EZD2. SD2 doesn’t have this feature and thus makes this part of the whole song production process “from start to finish” a lot more time consuming (and tiresome) task.
I always use SD2 for my final drum mixing since I want to start with dry sounds and then shape them the way I want it for the specific song. But when putting the drum parts (grooves, fills, etc) together from the libraries I now only use EZD2. It’s so easy to just search through my hundreds of drum grooves/fills, etc (libraries) with including only for example “toms” or only “ride”, etc in the search. I have quite a few of those libraries (or EZX’s or whatever they are called for these two drum programs…). To manually sift through every drum “library” when I’m programming a new song is a VERY time consuming task, but with EZD2 it makes thing much speedier and also a lot more fun. You don’t get tired or give up when not finding anything useful and still have 50% of all the stuff left to manually sift through… This process goes very fast now!
Finally, when I’m done with the midi drums for that song I then unload EZD2 and keep SD2 when moving onto mixing the drums (for each song) in my DAW. It makes the whole thing a lot more fun and with a better result aswell… So this post was mainly a useful tip for the newcomers I guess! Though it took me a while to figure it out! 
Regards from Robin!
