Cool: This place is HUGE for how central it is. Live in the area and need supplies to make shelves for your garage and traction sand so you can safely walk it to your garage because all of Calgary is an icy death trap? They've got you covered.
Less Cool: It's large for how how central it is, but it's small as far as Home Depot's are concerned. They often seem to be missing a lot of common place stuff... like the correct PVC piping to make a truck-mounted potato cannon. I'm joking, but I do often go home empty handed when looking for toilet parts, stairwell parts, and I still don't have a truck mounted potato cannon.
Cool: The staff are mostly very friendly and knowledgable...
Less Cool: ...If you can find them. You can wander lost in that warehouse for a long time without coming across and employee to help you out. Sometimes they'll just point you in a direction. Be careful, as soon as you turn your back, Home Depot employees are able to turn invisible at so much as a blink and you won't find them again.
Cool: They always have enough cashiers and I don't have to wait in gigantic Safeway style line ups.
Less Cool: There is no less cool. Thanks for having enough cashiers to move the customers through. Well done Home Depot!