Does anybody here have any experience with the following A4tech mice?

X-748k
X-738k
X-705k

I'm interested in the shapes, size, weight, durability, etc.

I'm assuming they all have the same technology inside, being optical, 1000 usb. Looking at photos on the net, the X-748k looks similar to Habu or DA shape maybe? X-738k similar maybe to razer? Not sure about the X-705k.

These mice are not sold here in the US, so I was hoping to get some feedback before I tried to have any shipped in.