The slant cone is better but
Give the customer the shape they want.
(Pharmicists like v-shape They were in the col. Lab)
P-K and Gemco v-shape units will give the same Blend if,
Same size (total Volume)
Same material (Stainless steel or plastic)
Filled in same manner
Rotates the same number of times at the same speed.
A V-shape blender from GEMCO will provide the exact same performance, say one to two percent variations consistently, as a V-shape from P-K. That is as long as it is the same size, made of the same material (say stainless steel vs. plastic due to static considerations), filled in the same manner to the same level and rotates the same number of times. The same statements do not apply to double cone units and obviously not to the slant cone.