Looking to pick up one of the monster batteries from these companies, 3500 and 3200 mAh respectively... Does anyone have any real world, hand-on experience with these batteries? I like the size of the Seidio, but the black back cover looks hideous. The Mugen is not as big, however the cover matches the stock color, which is a plus. Here is the kicker, the Seidio is a good $20-30 cheaper than the Mugen. Do I sacrifice looks for performance and price? Also, I saw that HTC makes an OEM back cover for extended batteries, will this cover fit the Seidio battery? Thanks a bunch!!!