This morning I ran nearly constant 800 watts with peaks of up to 2.5KW, for over an hour due to a strong westerly wind...
My own experience with the pie has been rock solid ( on a different controller, but the gm one was ok...but never used much regen), approaching 5000 miles now, 1 bearing changeout has been about it for the wheel itself, and it has seen some rough times
I know the crystalyte in a lot of ways will outperform the Pie.....bit like comparing a ferrari and ford cosworth, the most expensive should perform the best, if you get what I mean