Hi Steve,
I've had three RELs over the years. The TX series. The brand has a well deserved reputation for being a two channel serious music lovers top choice. I totally concur and you will read many reviews to that effect. Musicality and blending with the mains are a given but the true magic is their incredible impact on soundstaging, tonal saturation / imaging density and subsequent emotional impact of the entire system sound. It impacts everything across the entire frequency range on all music genres.
Once installed and tuned and you've had sometime with them under your belt, do the following. Play something familiar. Turn the subs off. Listen again and be prepared to be shocked. The entire musical foundation will disappear. Not hyperbole. Just fact. Trust you and your family are well. Take care my friend.
Oh yes, I almost forgot. Do buy the SubDude isolation platform. Cheap and very effective.
Gordon