Top of the line is a pretty high bar around here to be honest, I have a board that feels very powerful to me, still blows every pre built board I run into out of the water in terms of acceleration, and will do about 40 miles of range at about 35mph. that said, there are people around here with twice the top speed that I have, you can buy a pre built from @skyart that does 80mph!
I really like my board and I think it’s great for what I need it for but I have a hard time calling it “top of the line” when I think of boards with more than twice my battery capacity like Bog Roosh or boards like Project Stop Resisting which are (with a skilled/potentially just insane rider) capable of doing 0-20mph faster than a Dodge Challenger hellcat with 700+hp