Windows Phone Thoughts: X50/X50v Battery

We've seen a few reports on the battery life of the X50/X50v. Basically, at full brightness, heavy use, and with wireless on, the battery life can be quite short. People have, however, gotten significantly better battery life by lowering the screen brightness and/or turning off wireless, but some have their doubts as to whether or not this models everyday use accurately.

For those of you who have or are considering ordering an X50/X50v, did you buy or are you going to buy the extended battery?

[Edit - Jason Dunn now has a few battery tests posted]