Yamaha DTXpress/DTXplorer/DTXtreme

Hi Pete,

I'll speak to the expandability side - I've got the following 
connected to my DTXpress module:
Input  1: a KP60 and a Pintech VK10 connected with a Y-connector.  I 
just prefer having separate pedals that I can position where I want 
them.  I haven't had any triggering problems so far, but then again I 
would not rate myself as anything other than a hobbyist in double 
pedaling. 
Input 2: Pintech SE102 pad.  You got to love those stereo pads.  I 
usually have the rim set to wood block or maybe glass breaking, 
clapping, who knows?
Inputs 3 - 5: TP80S's all around (I set the rim triggers for various 
sounds/functions depending on what I want them to do.  It offers
great 
flexibility) 
Input 6: PCY80S, of course (rim is a deep crash, pad is deep ride)
Input 7: ditto above (rim is mid pitched crash, pad is cymbal bell 
most of the time)
Input 8: PCY80S (usually ride the pad, with the rim being set for cow 
bell, or other sounds/functions)
Input 9: I have one more TP80S here, which I know is a bit of
overkill 
right now, but when/if I upgrade my module, I'll be able to utilize 
this in stereo mode too
Input 10: I have two PCY60s connected with a Y-connector to give me 
two crashes (I know, right now they both make the same sound, but 
when/if I upgrade the module....)
High Hat pedal: HH60, for which I am am expecting an HH80 replacement

With that I think the kit's almost maxed out, but boy is it fun.  Its 
physical setup is similar to what I used to have in my accoustic 
kits, which is what I was looking for.  But I was amazed, and
continue 
to be, with how much more you can do with this kit. 

The headphone output does seem to have its problems - but for
anything 
important, I would think it would be better to use the rear outputs, 
but that is something I haven't had a need for (read that to mean, my 
wife prefers that I not experiment with that) since these are 'music 
room' drums.

I'll leave the points on Midi to others, because I've still got 
that on my list of things to experiment with too.  But do save away 
for a kit of your own, then over time look for good deals on upgrade 
components to get it the way you want it (if you need to change 
it), it'll be worth it. 

Walt