I'm going to purchase a new module. I'll be using ddrum triggers on an acoustic kit, and going via midi into pro tools. I'm not sure if there is latency on these machines, but I want it to be as accurate as possible. I don't need any onboard sounds. That being said, which module would be the best, if any of these, and why. Roland TMC-6: $200, guitar center Roland TD-3: $200, ebay Roland TD-10: $450 used, guitar center Alesis D4: $150, ebay Alesis DM5: $200, ebay Yamaha DTX 2.0: $200. ebay any input is appreciated!