Planted Tank Guru
Join Date: Mar 2009
Location: Madison, Wisconsin
Yep those are pretty amazing plants, but hard to get into the US. A few years back Piptospatha reidleyi was apparently pretty common in the hobby in Europe, but I have looked around and can't find it anywhere.
Bucephalandra is in that same group of aroids with those other genera.
I have Schsimatoglottis 'Frosty Kiss' growing very well as a riparium plant.