Bests & Worsts Reviews from Amazon

I own two houses (primary and summer home), both are large (over 4,000 square feet). I bought one of these systems for my main house and it seemed to work great at first, easy set-up, great range, etc. So I bought a second set for my other house. That was about a year ago, after a month or so they both started to constantly drop off, constant rebooting and resetting, tech support keeps having you do different things that make no difference and then they just seem to stop responding - as if they don't have any solutions. Incredibly frustrating. After a year of this I finally have to cut my losses and toss them in the trash - about $600 worth of junk, I have 4 units in each house plus brackets etc. JUNK - I really question the ratings on Amazon. If it was one house I would think maybe it was my ISP but both? These are junk.