I’ve had experience with both, and Aluminum Pergolas with Canopy https://www.aluminumpergola.ca/pergola-with-canopy/ are a great budget-friendly option if you're mainly looking for shade. They’re lightweight, easy to install, and can look stylish. However, canopies may not hold up as well in heavy rain or wind and usually require more maintenance over time (like cleaning or replacing the fabric).
In comparison, a Louvered Aluminum Pergola offers better durability and year-round use. You can adjust the louvers for sun or rain protection, and many models are waterproof with heavy-duty construction. If you're in Canada or anywhere with changing weather, I’d recommend going with a louvered system from a reliable brand like Aluminum Pergola.