While I'd ideally prefer the same speaker all around, none of my systems do that. One has same surrounds in brand/model series, another just same brand, tho stated to match timbre. The other two don't have matched surrounds by brands or models. I think it's subtle for surrounds, and most likely would be noticed for music, depending on mix somewhat, tho. I wouldn't worry about a mismatch particularly until you give it a trial, tho.