My most recent build is a mashup of the 300$ & 600$ builds.

Using chrome 64-bit on windows and don't have the problems you mentioned. Usually have about 3/4 tabs open all the time (i know it's not much) with extensions like ABP, Disconnect, Hola and a few other commons. I'm not saying that running on windows makes it snappy, but maybe everyone is not having same issues.

Yes ofcourse I will. I am an android user but I've also got a 5c at home. I find iOS very irritating without Auxo 2, status hud 2 and winterboard (with a few themes and tweaks)

Been using this on both mobile and desktop for a while now. :)