limbot
6
Given your requirements it think going with the latest, greatest, fastest is problably too large an upgrade for you 
I’d suggest either a Creta or a Slate. You end up with a package that’s realy only a little bit bigger, and a little big heavier and a little bit more power hungry than the AR150 but is much more powerful and supports dual band WiFi. Using these you won’t lost half you bandwidth if you WISP on one band and WiFi on the other.
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