Please recommend a small and affordable servodriven engraver brass dies (20 x 30 or 30 x 35 cm).

Thanks

Found some very nice spindles at www.fimec.it and www.eltesrl.com Large power range and up to 24000 rpm. Any opinions ? Do you know these motors ? How much power and speed do I need for my brass dies ? (depth - up to 2mm, high level details)