Well , Morrows look a lot better with Monitors and are very flexible, BUT IMHO sp-3 is as low as I would go with Morrow, SP4 is what I use on my Totem Standmounts, sweet spot with Morrows, real step from SP 3 .
Morrow sells jumpers on his web-sight that work fine with
single wire morrows ,about 135$ as I recall.
But I'd rather have Symphony's soundwise below SP-4.
The brown blends in with most floors too.
Personally I never sell anything, but if that matters to you Symphony would be hard to sell, Morrow easier.