For me at least, the Nokia Lumia 720 looks promising, as it has Gorilla Glass 2 and has the more solid look and feel of the Lumia 920:
http://reviews.cnet.com/cell-phones/...-35619093.html
It has MicroSD up to 64GB and 6.7 Megapixel camera. I would prefer this over the 820 simply because the 820 feels a bit too flimsy for its price, even though you are going down from 1GB of RAM to 512mb. It'll probably be around the £260-270 price with VAT included. It also might push the HTC WP8 devices down in price too, but we will see.
Here are some more specs on gsmarena.