Build sheets are good but not great. They’ll do.
On the first few prints i could barely remove the prints, but now after some usage it got really good. Sticks well and can be easily removed. Only thing you should keep in mind is that the structure is way more rough than the original prusa pei plate. First picture shows original prusa plate, second picture is this steel sheet. Really noticeable different in surface, but somehow i also like it.