Yamaha DTXpress/DTXplorer/DTXtreme

Hi,
What is the difference between the SP and the regular?
The new DTXPRESS III seems awesome.  However I think I'm gonna have 
to save up a little bit before replacing my DTXPRESS1.  

Mike

--- In DTXpress@yahoogroups.com, "jjcorley0000" <jjc@s...> wrote:
> 
>     I'm not sure if this has been posted yet, but a nice little 
video 
> demo of the DTXpressIIISP can be found here:
> 
>     http://namm.harmony-central.com/WNAMM04/Index/videos.html
> 
>     (Also a video of the new Roland high end kit:  V-Pro)
> 
>     This video pretty much has me settling on the IIISP as the one 
> I'm gonna get... (well, after I play it in person to be sure)  I 
> think the sound and features per $ is tough to beat.