LG KU990i or LG GW520

Hiya,

I am going to replace my Sony Ericsson phone soon and I have been researching what phone to get.
I want to stay on the three network and the two phones that I have narrowed down my search to after looking at quite a few factors such as camera, keyboard etc are LG KU990i and LG GW520.

So am just wondering which model is better than the other?

Anyone used one or both of these phones before and if so, I would be grateful if you could tell me the pros and cons of the phone model.

Thanks, all help is much appreciated