Thanks. Never heard of'em, just looked. Nice. However I think your E20 is superior, it has a full rear triangle instead of rear monostays, I think especially important in aluminum, and mid-drive instead of hub motors. That was a deal and a half. Lithium batteries are pretty durable these days, but if you ever need to replace them, I'm sure you can find something suitable. It would be great if Qualisports uses the same diameter seatpost, and battery voltage, and sells that as a replacement part.