I have a Yose kit, it was my first conversion kit / Ebike and I was impressed.
After I changed the display & controller to KT items I like it a lot more.
As supplied, Yose works well but I found it basic and crude. Converting to KT gave alot more options to set it the way I like, and changed the the system so from "Speed controoled" to "Torque controlled" - it's just a lot smoother and nicer to ride now.
I'd suggest either buy Yose kit and plan to swap the controller & display to KT (a bit of a waste) or look for a kit which is supplied with a KY controller.
Lots of background info - and a similar recent discussion about Yose
https://www.pedelecs.co.uk/forum/threads/yosepower-hub-kits.30061/page-93
I like Yose a lot but if I was buying again I'd look for a different kit and buy one that comes with a KT controller