Wirelessly posted (Nokia Lumia 800: Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0; NOKIA; Lumia 800; Vodafone))
I came to the 800 from the E71 about 6 months ago, and it has been a very positive ownership experience. Having used the E71 keypad I was fearing a rough transition, but I was acclimated in a few weeks.
I am meeting the 36-48 metric, aided by manual e-mail push and medium setting on the brightness