I'm flying a second-hand Inspire1 with the Litchi app and I really like it. It performs exactly as it should. Waypoint missions are smooth and accurate. The video is outstanding even with just the stock X3 zenmuse. I bought a set of ND filters for it.
The auto landings are within a circular error of about 1 meter.
I have 2 batteries, quick release props and an extra set of props that I don't think were ever mounted. It included the second (camera) controller.
The only problem I had was connecting to my newer Samsung tablet. I tried my old tablet and Voila! Hooked up in about 15 seconds.
I had to re-align the camera to the horizon but that was easy. After a quick search and some button jabbing that seems corrected.
I just ordered a Phantom Angel to deep discharge and manage batteries.
If you find a bargain, I would say snap it up.