Hi everybody! This is my first post. I'm a long time tennis player/coach with decades of photographic and sound engineering experience, some video and video editing experience (church band, client's birthday parties), and NO action cam experience, except for when I made a chest mount for my Kodak Playtouch a loong time ago. I don't really need lots of the newest tech so I'm seeking a reasonably priced ($75-$200) action cam with the following features: 1) ability to mount universally, including on tripod and helmet, and body/chest. 2) enough image stabilization to deal with mountain-biking footage. 3) 1080 & 720p with high FPS rate (min 120) to analyze tennis stroke mechanics. 4) good on-board audio quality AND ability to use external mic. 5) prefer user-friendly simplicity Any info and suggestions are greatly appreciated!