I sold all major components of my former sound system with the exception of (4) Electro Voice passive speakers and (2) Crown amps. Question: Should I hold to the lowest number of brands as possible? i.e., stay with E.V. for the new sub(s) and any other speakers as well as only adding Crown amps or go the patchwork mix and match with maybe a Yamaha sub? What makes the “smarter or nicer” looking system? Thanks.