Thanks johnriii, for starting this thread. I've been researching for a little over a month now, jumping back and forth between the M or Maxx HD. Originally, it was the iPhone 4s and 5, as well. Sounds like the M would satisfy my needs and wants. The Maxx HD would be more of a ooh ahh for me (mostly for the battery). Based on professional and user reviews, and threads like these, most users are getting 12 to 24 hours plus usage. And for the most part, getting a full-day usage (from wake up to sack time). Reading this post and threads have sealed the deal with me getting the M. Thanks.