I am thinking about buying a few expansion packs but i’m unsure how they work. I already have SD but the expansions i’m looking at are for ezdrummer. I’m using a Roland E drum kit to trigger my samples in SD, will I still be able to do this? I was wondering how the expansions for ezd work in sd? Will I just get the samples and they plug into SD? Can I use the x-drum feature with these samples? Should I not waste my money and just buy SD expasnions? Is there a difference in quality, for example, The Metal Foundry Vs. Metalheads EZX?