Steven Sheng said:
Of course KT is better. If you use a KT controller, then you must use a KT display.
This link seems to sell better.
https://www.aliexpress.com/item/10000423707519.html
Depends on what you mean by better, or more importantly, what the OP means by better.
If better relative to quality, KT is a known brand and usually has decent documentation available, so nod goes to KT
If better relative to the OP's specs, Either, since both meet his requirements
If better relative to someone else's specs, then could be Either
If better relative to price, the ZL wins, if you need to buy a display (doubling the cost) to get the additional features, including control of PAS levels
For me, I wouldn't buy the KT since I can't stand a noisy ebike, but I can understand people placing a higher weight on the other features, especially if noise isn't an issue.