As you're well aware, there are so many other factors affecting SPS. "IF" you got all that dialed in perfectly, running LED will showcase your work well. While I still give 400w radiums the win on color, I only say that from hundreds of hours of staring in my tank under both systems. Nobody ever looked at my tank under LED and thought color sucked. Just me
And that was from maybe a 5% difference in color. I did have a couple pieces completely change color, but the other 100 pieces did well with only a slight drop in that pop we strive for with SPS.
I think a hybrid system will give you enough of all the desired features that you'll be happy with the purchase.