If you want fantastic sounding drums with little hassle, THIS IS WHAT YOU ARE LOOKING FOR. Whenever I use Steven Slate samples, I watch my clients mouths drop open.
I own Steven Slate Drum Samples 1.5 and I use it with Drumagog. It is truly one of my secret weapons for any time I need fat processed sounding drums. Steven Slate knows how to make huge drum sounds (I mean huge) that many of us spend hours on hours trying to create. These sounds are thick and have cut through all of my mixes. The separate room samples allow you to mix room to taste and the room samples are some of the best I've heard.
Beyond that, 2.0 adds so many more kits including cymbals. Rumors are that the next version will include its own sampler engine (beware Addictive Drums and EZ Drummer).
When it comes to processed drum sounds, it just doesn't get better then this. Plus the support has been great. When I had a question, I got a personal email from Steven himself.