Yamaha DTXpress/DTXplorer/DTXtreme

hi, i'm looking at getting a DTXpress, but want to keep my acoustic 
kick and snare, but with them triggered. any ideas? i've been looking 
at filling them with foam and triggering them, but what triggers are 
best. i've also considering using pearl mesh heads and i've heard of 
the Hart Dynamics ADC. any comments, and does anyone know where to 
get these in the UK? thanks , Mike