I got Clear when I moved because I really didn’t want to go with Comcast. Luckily, I had a local rep who was willing to come out and test the signal in my house before I committed. This was particularly important for me, as my house is on the very edge of all of the surrounding tower signals.
I never got better than 3 out of 5 bars signal, but I was okay with that. It was slower than advertised, but nearly as fast as my previous provider. However, I discovered that the signal is very sensitive to weather. If it rained, I had no internet. I doubt that the service completely goes out for most customers when it rains, but it probably does slow a bit.
For me, it was just too unreliable so I begrudgingly got Comcast. I haven’t really tried out the mobile receiver since most of the places I would use it have wireless already.