I purchased a Picturebook C1MZX from them last spring, and they are an excellent company, and a pleasure to do business with.
I also have several friends who have purchased picturebooks from them, w/o problems, as well.
The japanese versions are more powerful than their US counterparts, and often have features the US ones, don't.
Like Bluetooth on the C1MZX.. and the larger (60 gig) HD..
Peace,
Dave