Kitchenaid Heavy Duty Plus Kitchenaid: Artisan Or Heavy Duty (Plus)?

Kitchenaid: Artisan or Heavy Duty (Plus)? - kitchenaid heavy duty plus

I am in my mid cook / baker. I probably bake about 2-4 times a week. I want to buy a KitchenAid for a long time and now I've decided I want to buy or needlework and heavy. I do not think he has the strength of 600 in favor, making it among the heavy and crafts. What is the difference between working hard and heavy? What are the advantages and disadvantages of the bowl lift and tilt of the head?