Hi all, Thinking about purchasing the Pipo M7 Pro. Specs look great and reviews seem good, although scarce. I have some reservations with the product not being backed by mainstream carriers. My question to you are.... Is the build quality comparable to middle of the road American products? Have you ever exercised the warranty with the manufacturer or a distributor? Do you have a preferred distributor (Ali Express?) that will stand by the product? Is the HD iFive X2 a comparable product? Is their any advantage to the M9 Pro other than the bigger screen? Anything else I should consider? I appreciate any help you can offer.