I've been doing quite a bit of research into which replacement battery to purchase for my iPhone 6 and wondered what others have found. Obviously I can go through Apple directly but that's not happening when they take 3-5 days and charge $80+. I can easily do the replacement myself and I've seen good reviews about iFixit's offering but they are still at the $40 range and since I need to do it on two phones, I don't also need two sets of tools. Any thoughts/ideas? Thanks!