The Nooyen super coated and plastic slats are the best for your milkingparlour
For example Boreco from De Meern (NL) builts adjustable floorssystems in milkingparlours and bordesses for rotary milking parlours with Nooyen floorelements.
In these parlours hygienic working is a must.
The Nooyen floor-elements are V-shapes in stead of T-shaped. Therefore they are quicker, but more important BETTER to clean.
If you have to clean these floors twice or three times a day, every minute saved will ad up in labour, water and power.