Of the 3 big box home reno retailers, Lowes is the best. Home depot is in the middle, and Rona is at the bottom.
That said, if you break it down by categories, it's all over the place.
Rona is the best for lumber, heavy structural stuff, and knowledge of staff with respect to heavy structure by far. Rona is also best for lumber.
Rona is at the bottom for electrical and plumbing.
Rona very very much depends on which store you go to. Belfield and Martin Grove is fantastic and Dundas and Royal York is very good. Better than any Lowes or Home Depot (both are former Lansing buildalls). Rona Stock yards is shit all round - disorganised, dirty, dickheads working there, stuff not neat, never anyone there.
HD is very convenient for me and I know where everything is.
HD is also best for tools by far.
Lowes carries th best names, mor diverse offerings and stores are th cleanest. Lowes also offers a best promotions, with Rona second and HD almost nothing.
HD return policy is generous to say the least.
Th thing is with Rona, many of their stores are too small, or were old Lansings that got converted. I don't know how this I going t work. Fo example, th Ron on Dundas at Royal York is ancient, but ha ha great lumber yard. Way too small to be a Lowes