Yamaha DTXpress/DTXplorer/DTXtreme

Following other peoples suggestions I managed to download a demo of BFD2 and hook it up to my kit with the free ASIO drivers.  Latency is not bad and the sounds are great, but you need a serious computer to run it - my laptop nearly exploded trying!  So, I guess if you have a kit without expandable sounds it may be cheaper than a new module.  I saw someone's DIY edrum kit (on the Vdrum forum, I think) using the DTXplorer just as a trigger for the computer sounds.  Probably a good low cost approach to a large range of high quality sounds provided you already have a suitable computer.

Keith.