ok. the problem in suggesting any kind of specific dpad, is that gpd will get any dpad that appears to be similar to what you posted.
in fact, consider if you suggest these dpad, and gpd take this suggestion. surelly they will not buy or investigate about the exact dpad of these device. Simply will check on their local market for some similar of this.
consider that the most similar is something like the X360 dpad... or worst...
and put in the device.
most probably we will get a bad control for an interesting device.
Personally, i prefer the Dualshock dpad, but for get sure about they understand what the users wants as DPad (a single plastic piece, not 4 buttons), i prefer to suggest something that I'm really sure they cannot missunderstand, and is a good dpad.
for this reason, i prefer to suggest this basic, fucntional and good DPAD. I don?t want to get a device with a missunderstand about what the users wants.
when i see the first pic, i realize on the dpad and i get afraid about how it will respond. most probably, will be a bad dpad.
this is the reason why i suggested the NES dpad for the device, because the chance to get a bad dpad are less.
(sorry about my english)