Yamaha DTXpress/DTXplorer/DTXtreme

Hi guys,

Im looking to purchase a dual trigger pad to use in the 9/10 jack. I 
want to expand my cymbal possibilties. Are there only certain types 
of pads that are compatable with the dtxpress brain? I know obviously 
Yamaha will work, but what about other brands? Has anybody tried 
the "trigger bar"? Will this work with the dtxpress? Thanks for your 
help.            Danny Scott...Funky New York City....