Yamaha DTXpress/DTXplorer/DTXtreme

Hi!

Here I go again. I found that to mount my "R-word" snare I need some 
hardware that I am ordering online from Thomann in Germany. They also 
have Yamaha cymbal pads that I can get for essentially the same mailing 
cost as just getting the hardware. So, to add the choke capability to 
one cymbal (crash), should I get a PCY-80S or a PCY-65S? What are the 
differences?

The brain is DTXpress I. I am planning to use the extra pads (snare and 
single-zone cymbal) in 9/10 via a Y-cable, or add them to the existing 
stereo inputs using Keith's Magic Box. Tweaking seems to be the other 
half of this hobby...

Thanks for any advice,

Jyrki