Hi everyone,
Just my 2 cts as I bit the bullet a while ago. (June 2020) and have been using it since.
For the price, the experience is a bit underwhelming to be honest. I do get coverage in underground parking where if I don't have the booster it wont work. I feel it works, but marginally. I alternate the use of the rig where the booster is installed and that is the rig that sees the most use when offroading. While offroad the experience is very similar, marginally better experiences but not too much to write home about. The reality is that with the price point I paid (500US) I was honestly expecting MUCH more. I recently bought the Overland Antenna and will be installing it soon. I will post an update where hopefully things will get significantly better.
In conclusion, I feel the best coverage you can get (at least in my experience) is having multiple providers in order to play with coverage/providers. 500US and 115US for the antenna goes a long way towards other investments.