WiFi and 3G are converging. One of these services is free. Guess which one should receive the attention of voice services? I tried Skype over WiFi and it works well with GOOD WiFi connections. So I hope Moto and Google will move into that aspect of voice comm and show us how it is done. (My friend has Moto Defy Mini and she is happy with it -- except for the rates!)
I prefer the Kindle Fire HD. The interface is amazing and it's very easy to use. It's a great combination of functional and simple. Check out its Amazon page(http://amzn.to/UBAU84) if you want to compare what they bring to the table.