I bought an Archos 80 G9 Turbo tablet a few weeks ago and am very satisfied with it. It has a 8 inch 3:4 screen and is Google Play certified. Runs on Android 4 ICS and can play many kinds of videos. The special feature of this tablet is that it has a sliding door in the back which can be replaced by an optional 3G sim card holder. This compartment has a standard full sized USB port into which USB memory cards can be inserted (they have to be pretty small) and used as extra memory.
By the way, it also has a micro USB slot too and bluetooth. I have just tested the Sony bluetooth keyboard for their tablet on it and it works. If you want a bigger screen they also have the same thing with a 10 inch screen.
As Archos has just announced the imminent arrival of their G10 product line, the G9 machines are slowly being reduced in price so they are good deals at the moment.
Here is a review of the machine and other comments.
Actually someone on Mobile already bought one and wrote about his impressions here: