How many of you ThunderBolt buyers will also be purchasing an extended battery to go along with it? If history has told us anything, HTC devices are not well-known for their great battery life, and all smartphones are power-hungry. There are 2 options: Seidio 1600 mAh Extended Life Battery (slim) seidioonline.com http://www.amazon.com/Seidio-Innocell-1600mAh-Extended-ThunderBolt/dp/B004O0TGU2 HTC 2750 mAh Extended Life Battery (thicker) HTC Thunderbolt Extended Battery & Door Cover (2750 mAh) http://www.verizonwireless.com/b2c/store/accessory?action=accessoryDetails&accessoryId=47424 The Seidio is available now and fits in the same battery door (thus, it will not change the profile of the phone), but is not that much of a jump in capacity (200 mAh gain over the stock 1400 mAh battery). The HTC might be out of stock until sometime in early-mid April, and comes with a new battery door (because it will add bulk to the device). Which one will you choose, and why? Is the Seidio worth the price for the modest gain? Can you handle the added bulk of the HTC (when trying to pocket the device, or find a case that fits, or merely aesthetically)? Or do you think the stock battery will be just fine for your purposes?