Drum Triggers

D drum triggers are what to go for, I've use Alesis D4 for ages now , which is a good starting point, I also use some other samples I've picked up along the way
 
Oh yeah, what should I go for in terms of outputs on the drum module. I guess my question is, what if I want to trigger toms too. Do I need enough outputs to cover toms, kick and snare? For me that would be 6 total outputs?
 
Well, if you are triggering toms, I'd say go for the d drum4. The sounds actually in the unit aren't great but you can download hundreds of sounds and the pitch/velocity bend function is great for making your toms sound more realistic.