Well, I might as well add my 2 cents, but keep in mind that I'm a bit biased.
We have a few clicky metal kicks.. kick5, black kick, panty kick, kick15... You can hear many of these on a lot of metal mixes from Colin Richardson, King Sneap himself, etc.. Kick5 has become the industry standard metal kick within a lot of the Los Angeles mixing circles.. but you do have to tailor the low end to the tempo.. the quicker the mix, the more lows that need to be attenuated. But the tope end smack and click on kick5 works for metal.
Cymbals.. our new Paiste cymbal pack has some very lush and harmonically rich cymbals that go nicely with the Zildjian/Sabian pack in 2.0.. keep in mind our cymbals were recorded to 2 inch.. for metal they work great, but you have to eq them for metal... metal cymbals have more bite and top end.. a little 5khz goes a long way. I'll also add some 10khz sparkle on the cymbals to cut better in a metal mix.
As for the actual drum tones, I hope we have enough mp3 demos on the site to let them speak for themselves.. I made sure that 3.0 now has any kind of drum sound you can imagine... from tight and cracky, to low and splatty, to deep and woody, and everything in between.
For metal toms, I like our Metal Tom set and the Qik Tom set sounds huge, but for metal just add some 5khz bite.
As for how we compare to Superior 2.0, I'd say you should wait for Superior to come out with at least 3 more expansion packs so its a more fair comparison. But to my ears (and I've only heard the Superior online demos), its a great product that is done very differently then ours. The sounds are very raw which is not a bad thing, its just different then our approach, which is to have drums that sound "done".. I will say that one thing that struck me about Superiors snares is that they are all tuned very similarly.. In SSD 3.0 I can say for sure that there is a huge variety of snare sounds and tunings.
BTW, we do have more cymbals coming in an update later this spring, I'll make sure to include a few that have some nice "in your face" metal processing.
Last, I have a lot of new demos I'll post of SSD3.0 in full on metal mixes.. I think it'll give you a much better idea of its capabilities, at least better then my words will.