Behringer XD8 / XD80

While researching an eKit to use as practice pads, I came across the XD8 and XD80.

http://www.musiciansfriend.com/drum...ith-110-sounds-15-drum-sets-and-usb-interface

$300, real kick pedal, USB out.

Youtube videos:

https://www.youtube.com/watch?v=oiwnjReso_s
https://www.youtube.com/watch?v=FD7X_JGA0NA
https://www.youtube.com/watch?v=lbjM5p_LJPA

I do not notice a ton of wobble.

Does anyone have any experience or thoughts on this eDrum line?