Oudie 2 and the others are extremely close in size, but mount differently in the brackets they come with.

The interface cables are different, mainly because the Vertica/Avier/GliderGuider has 2 serial ports sharing the same 10 pin mini-usb socket, whereas the Oudie uses a 5 pin mini USB socket. The Oudie comes with an appropriate interface cable for most connections, with the others the suppliers offer appropriate cables as extras.

All these units are excellent. The screens really are superb - nothing to choose between them.