so..get yourself a Tevo Little Monster...as its a delta..a duet is like nitro injection 😉
Anycubic 8Bit...60mm/s ( depends on Board and mechanic )
Duet 32bit 60x60x5mm Cube 240mm/s
On most Cartesian Printer a 8 bit Board is still enough. Main reason for a Duet there..simple handling..Web Control..built in Wifi..so more luxurious reasons