I agree, most rotary machines are capable of the 3 main functions of lining, shading and colouring but excel in 1 or 2.
Here's mine;
Rotaryworks-Lining
Rapier 2-Lining
Mike Metaxa-Colur packing/whip shading
German Evolution-Shading/colour blending
Stealth-colour packing/shading
Vivace-getting me excited-due any day