Oh, I'm glad to see people using the DM-5 for this, because I went and
read up on it before; and I though that you could control it from a
computer, but you could not control the computer from the DM-5. Some
MIDI units are only IN, and not OUT I think?

If anyone has used both the TMC-6 from Roland and the DM-5 from Alesis,
can you tell a noticable difference in how good they trigger, such as
quick response and the how well it picks up different levels of hits.
Also, I was wondering the difference between the TMC-6, which says that
it has the ability to do ...

Supports separate head/rim shot triggering of PD-120/80R V-Pads
Supports 3-way triggering of CY-15R and CY-12R/C V-Cymbals
Works with FD-7 hi-hat control pedal

I am interested in knowing how the separate triggering works, Is this
for one input? And how does the hi-hat control? Does the Alesis do
all this? Can you set up an Alesis for a hi-hat type setup?

Well, that is a lot. Maybe someone should just recommend a book for me?