Theragun PRO Handheld Massage Device (Open Box)

Bought the Gen4 TheraGun Pro on the Amazon 2022 pre-Black Friday sale.I've had a generic ~$90 percussive massager for 2-3 years and decided to get the 4x more expensive Theragun Pro when it went on sale. The 3 things that drew me to it were:1) the 60lb stall force vs the 30lb stall of my generic unit (the 16mm vs 10mm massage depth was also a consideration)2) the Theragun's proprietary triangular shaped handle3) the 2 swappable batteries, that allowed for longer sessions (and allow for charging one battery, while the other is in use)After using this 4th Gen Theragun Pro several times already, here are my key points:- that triangular shaped handle (and the ability to change the angle of the arm) are THE biggest improvements, to me, ESPECIALLY for using the unit on myself.The triangular grip, and the adjustable angle of the 'arm', make it much easier to find a comfortable, secure grip to use this on myself (especially on my shoulders and back, but even on my arms, thighs, pecs, calf muscles etc.), compared to the 'T' shape of my generic unit (and every other unit on the market).- the 60lb stall force (and 16mm depth vs 10mm) allows me to get an even deeper massage, especially on my back. I use it while sitting in a chair/recliner and lean back into it, so the (padded) back of the recliner allows me to brace the unit to push harder and apply more pressure (and as expected, the generic unit with its 30lbs of force will stall out, where this Pro unit with its 60lbs of force keeps going).- ***IMPORTANT NOTE TO FOLKS WONDERING***The 4th Gen TheraGun Pro that I purchased on Amazon during the sale that began the week before Black Friday 2022, did indeed ship with 2x 4th Gen marked batteries. I'll update when I've had the chance to actually time how long each battery lasts on a full charge, but unlike some reviews/comments, mine didn't come with 3rd Gen batteries, and thus far, one battery has lasted over 45 minutes of use, and the battery indicator is still at about 2/3rds.- the Bluetooth connectability and app that can be downloaded are interesting, and allow you to load 2 more settings on the unit (as it ships, the 4th Gen units have 4 available modes, but only 2 are pre-loaded/pre-programmed; a constant speed mode (that can manually be adjusted faster or slower), and a varying speed mode (that slowly varies back and forth from the slowest to fastest speed).You need to download the app to load/program the other 2 available mode settings, otherwise, selecting those does nothing (the modes show up on the display as 'T', 'I', 'II', and 'III'. Modes 'II' and 'III' aren't pre-programmed).Interesting to play with the app, and the various modes/sessions on the app not only have countdown timers for each bodypart/muscle group, but the app even shows you where to apply the Theragun, and gives you a recommended range of how much force/pressure to apply (and the unit itself has a sensor that indicates how hard you're pressing/how much force you're applying). Interesting and it may be of value to some.- some folks complain that the unit is loud. It's not a consideration to me. My primary concern is how well a massager works as a massager. As far as how loud, I can still have a conversation while using the massager, without having to yell, or constantly say, "WHAT?!! I didn't catch that". I wouldn't use it next to someone who's asleep, but having used various massagers over the decades, I don't really find this one exceptionally loud. There may be units that are quieter than this one, but as mentioned my priority for a massager, is how well it works as a massager.Is this 4th Gen Theragun Pro worth 3x to 4x the cost of cheaper options? That's going to be an individual choice. For me, the triangular handle and adjustable 'arm' angle allowing me to find a secure, comfortable grip to effectively use it on myself, coupled with the higher stall force alone, make it worth it. YMMV.