I love my FX Radar and never had a single problem with it. A lot of the negativity, people balking, cancelling their orders and complaints came out around the time a video review was posted on AGN. Maybe I was lucky or maybe mine always happened to be positioned in the right place to work properly.... about 1-2" below the barrel and 4-5" behind the muzzle. The same or similar spot many people are mounting them on their guns these days! Even back then, I said mine worked great while everyone else was bashing the Radar. I don't know but I never had any of the purported problems and now that more people are using them and figuring them out, there are far fewer complaints, I'm wondering if at least some of the problems were user error? I use my radar with .22 cal. and .25 cal air rifles, someone suggested that the radar might work better with larger projectiles that it can "see" better. I don't know, because I've never used mine with .177 cal. I can say that it works great with .22 and .25 and I absolutely love mine, always have. Some have also complained about the price but in the big scheme of things, it's not much compared to the guns, air cylinders, scopes and other things we pay big bucks for in our sport. For $199, they have a lot of great features and the size makes me take and use the radar a lot more often than I would have used my others. It's just so convenient, easy to use and can be used under so many varying conditions(sunny, cloudy, bright, dark, etc.) without fail. Once you have the App. on your phone and it's set up correctly, it takes about 5 seconds to turn on at the range. I bought a cheap, $7 tripod so when it's time to shoot, I stand it up under my air gun's barrel, turn it on and turn on the App. on my phone. Viola, that's it, ready to go! I also love the feature that has a sexy British girls voice telling me the velocity of each shot so I never have to look at my phone(LOL). I know other chronographs probably have this feature, but none of mine did. It's handy not having to look up from the air gun while shooting to see the velocity. There has been a V1.2 update to the software that added a few features. Since I never had any of the problems that some others complained about, I can't speak to whether or not the software V1.2 helped with those problems. It did add a few new features though. I say give it a shot, for $199 I don't think you'll be disappointed, on the contrary, I think you'll be quite happy with it! I love that they work under almost any condition, are accurate, very convenient and easy to use with almost no set up time which make me use it a lot more often than my old chronographs. I hope this helps at least a little bit. Have a good one. Stoti
My FX Radar on a small, cheap tripod and my Radar positioned properly beneath one of my air guns at the range.