OK, so after letting my NEW OEM battery i got from T-Mobile die twice and recharge, it has been on for 9.5 hours today and i still have 57% left on it. That is an improvement over the original that came with the phone. Id be anywhere from 25% to 30% at this time.
Ive had 3G on all day and did everything as normal but maybe have been a little lighter on checking emails and reading in forums. If this is how it will be, ill be satisfied with this battery though it still isnt neae as goods as the guy who got 37 hours from his Hong Kong battery. Hopefully when i get my other HK battery, it will be as good as his but wont hold my breath.