i.Gear vs. Zagg - the same or not?

I'm looking for a decent keyboard for my iPad3. Love at first sight was with this keyboard/case:
iPad 3 Keyboard Case - iPad 3 Cover & Wireless Bluetooth Keyboard | Logitech Keyboard Case By ZAGG for iPad 3

However, I somehow also encountered this:
TrekStor [MP3 players - USB sticks - hard drives]

They look the same, but apparently they're not (and to add to the whole confusion, the Zagg's model is sometimes marketed as "Logitech"). I was only able to find minor differences between the two; so if there's anyone out there using either one of these, is it a good buy or not?