@mquinnjr
I upgraded to C3150 from Archer C7. Solved all my connectivity issues: I had two cameras at the far end of the house that would drop signal occasionally and I wasn't sure if it was the router's reach or if the two cameras were interfering with each other because they are right next to each other. And my fire tv upstairs didn't quite reach the 5.0 band. Both issues gone.
I decided on the C3150 instead of the C5400 because the C5400 just adds another 5.0 band and there are only two of us that would be streaming anything.
Do you remember if the $139 price was for Version 1? I spent $200 for Version 2. Seemed like a lot of issues got resolved between versions.
ETA: I see from the link it was Version 1.