I got a hold of one of Seidio's OEM Extended Batteries and put it through the all the tests. Bottom line, in the field I love it. It doesn't perform miracles, but it does give them that extra umph to make thru a full day, even with my power hungry habits. Take a look at the full review:
And a good review it was! Sadly, I wasn't able to turn Hobbes' data into as meaningful a graph as I wanted to (my lord, I used to be better in excel), so my apologies for that.
Another apology - closing this thread as it's technically a dupe. Discuss the review and the battery here: