I have a SoloShot and a Pixio and I say go with the SoloShot and if you ever need to be videoed inside, just hire a barn rat to video you. The Pixio is not very user friendly or intuitive, and if you are using it once in a blue moon, it’s even harder to get it set up right.
I do agree that the GPS dependence of the SoloShot can be a problem. I board near my house, so I drive by the barn several times a day, and often my car tells me “GPS signal lost”. And I’ve only used the SoloShot a few times, but one of those times it couldn’t get a signal. In the exact same spot I’d used it the day before!!! But at least it has a screen interface to tell you what’s wrong. The Pixio relies on flashing red and green lights, which can be really frustrating to try to decipher. If you need to trouble shoot, customer service is in France (ie not at all in a close time zone). And you will need to download some files from the SIM card for them. It’s a whole thing.
Also, the Pixio has five pieces that need to be charged (the robot, three beacons, the watch) in addition to the camera. And none of them have indicators beyond green light charged/red light low (so if it’s green, how charged is it? Is it almost red or totally charged?). The SoloShot has only two pieces that need to be charged, and they charge on one cable (unlike SIX for the Pixio), and the robot/camera and tag have indicators to tell you how charged they are.
My opinion is that neither technology is really there yet. It might actually be cheaper to just hire a barn rat to video you once a week or so.