As I already pointed out in a much earlier post, anything over 500mW is illegal in most parts of the world whilst the BadBoy runs at 4 watts. I have a whole $32 invested in the one I bought, not much of a concern there. The BadBoy retails for $289.95 plus delivery and I'd expect it to eat power by the bucketload.
I wouldn't think mounting the antenna higher would make much difference to the range of the one I have unless the only connection is on top of a hill with houses in between. In both cases I've tried so far - Sydney and Brisbane - there are a multitude of connections to be had from 300m from shore, in fact in Brisbane there's one commercial network with awesome signal strength. I just don't want to pay by the hour. :-)
Once you leave the big city there might be a case for it, but I can't comment on that as yet except to say that my need for an internet connection in remote locations is fairly low, having HF radio aboard both yachts for email.
"The cure for anything is salt water... sweat, tears, or the sea" -- Isak Dinesen
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