Yamaha DTXpress/DTXplorer/DTXtreme

the pintech concertcast, while being cheaper than a roland, does not 
work on a dtxpress very well at all.  it picks up the slightest hits 
at 80% and the medium hits at 99% and without buying additional 
equipment, it is terrible to a drummer who varies the force of his 
snare hits, which i hope is all of us.  i am returning mine right away 
and would like to stop others from making the same mistake.  the worst 
thing is the foam colum up the middle triggering system, because if 
you hit anywhere near the foam (which is right in the middle, you get 
both a different feel and sound).  caveat emptor (buyer beware)