They tend to be larger than tilt-head mixers (since you need clearance to raise and lower the bowl), and they’re also typically sturdier and more stable so they can better handle thick doughs. Professional mixers such as the Hobart line mainly use this design, but so do some domestic mixers, like the KitchenAid Pro 600 Series.
Tilt-head mixers tend to be more compact than bowl-lift mixers, and they make it easy to swap out beaters or to remove the bowl while the beaters are still attached. Most stand mixers for home cooks-including the popular KitchenAid Artisan-are made in this style. Tilt-head design: The top of the machine tilts up so that you can attach or remove the mixing attachment and bowl.