First of all, when purchasing commercial planetary mixers, they should all come with the mixing elements and that is a whisk, dough hook, and flat beater attachment. Also, some of the larger mixers come with a trolley to move the stainless steel bowl around. You should also check the litre capacity of the bowl and the max of dry ingredients that can fit into the bowl. Just because your purchasing a 90-litre mixer you can fit 90 litres of dry ingredients into that bowl.