The chop saws can work well but many blades can develop a harmonic and become unstable resulting in a wide ratty cut. Some blades can also gum up which results in the teeth filling, again the result does not do you well. Use caution with conventional abrasive chop saws, there are so abrasive wheels that can be dangerous when they fill with molten aluminum, plus again they can be unstable resulting in wide cuts.
Wood working bandsaws work sweet with aluminum. Stability of the work table and blade choice can matter, again clogging teeth being a possible issue.
And as Glenn state, no need for carbide tips, very few of the carbide compounds are formulated for aluminum cutting.