I've seen dozens of threads on extended life batteries but none that are focused directly on the Amzer 1800 mah battery. I saw one or two comments about it but no lengthy reviews. Anybody purchase it? Tested it? Or is the 1750mah more reliable in terms of its actual incerased capacity? Everything I've read about the 1750mah makes it sound like its primarily Quality Control issues with Seidio. Some people rave about their results, others, not so much. I dont want to make my phone any thicker so its one of the two but I dont know which is more reliable in their claims of increased capacity.