I'm going to do the opposite: AppleTV (at least for now) has the worst selection of "channels" or apps of all of the set top boxes (or sticks). Unless there is that ONE feature on the AppleTV you must have, then you do not currently want one.
It's one killer feature is if you are already an Apple household, it integrates. Airplay from an iOS device (iOS 7 or higher iPhones/Pods/Pads) and streaming from iTunes. If you use a Mac, I believe you can throw your entire desktop onto the TV through it for web based streaming.
I completely agree, I received one for free after purchasing a computer and found it almost completely useless. The Airplay functionality can be found on many devices so the Apple TV isn't special in this regard. My MINIX A8-H Plus, which is a fantastic device by the way, can stream an iPads desktop onto a TV just fine, as well as Android and Windows 8.1 devices, so it's actually more advanced in this regard. Though it looks pretty ridiculous, the iPads icons and text look huge and there are these really annoying black bars on either side. I prefer using my Nexus 9 with my TV as I can use an app called Second Screen, instead of simply cloning the desktop it creates an additional expanded screen, you can also change the DPI to make the UI look more like a normal desktop, plus no black bars, native aspect ratio and resolution, very cool.
Anyway, I would stay away from the Apple TV, your at the mercy of Apple when it comes to apps, no web browser which I would have thought would be a normal feature for such a device, I mean my TV has a web browser for goodness sakes. I would grab a MINIX Z64 or if you can afford it, the new Nvidia Shield TV as this device is probably the best thing you can install on your TV right now. Whatever you decide on though, just make sure the device is able to install whatever apps you want, has at least 2GB of RAM, 16GB SSD, SD Card, USB ports, supports 4K for future proofing, etc. Also definitely install Kodi (XBMC) as it's an absolutely must have app, I can't stress enough to you on this point, it's worth buying one of these devices just for that.