[radiaL] midi controllers and radial

i've really enjoyed greg's "getting around in radial" series. nice to know i had most of this down already, but one big gap in my knowledge is how to integrate live sounds via midi, and also just general external midi control, so part 3 has my full attention! curious what all everyone is using (those who have taken this leap) in the way of controllers. has anyone tried this one:

http://monome.org/40h/

i caught daedalus playing with one of these last year, & began to fantasize what such a controller could do with radial. although the 40h is no longer in production, they've got a new unit in the works 

http://monome.org/articles/2007/04/26/peek-at-the-100h/ 

ah...