How centered are you with your SDA SRS 2.3s?

I'm asking what looks like an age old question, but hoping to get an update, as the posts I've found on this topic are 10+ years old.

I've finally got my system up and operational:
Receiver: Anthem MRX540 8k
Amp: Meridian 559
Mains: SDA SRS 2.3
Subs: Two Klipsch Reference R-112SWs (my "listening" room is also our party room... 60 feet from fronts to back wall, and this space was eating up bass, so therefore the second sub located in a back corner)
Rears: Monitor Audio C280 (in ceiling)
Center: Signature S35
TV: Samsung 85" Neo QLED 8k

I love the stereo sound and the 2.3s fill our basement party room really well, even at low volumes. While my wife is the primary user of the surround system and thinks it's just fine as is, I am a bit underwhelmed by the sound from the slim S35 center. It's plenty clear with voice tracks, but doesn't have the richness we have with our upstairs system center; a Paradigm Studio CC-570v3 (sitting between Studio 100v3's). I didn't really expect a lot from the S35 center, but I found it locally at a bargain price, so got it to have something right now.

Experienced recommendations for a better center appreciated. I'm not ready to drop $1,500 for a Legend L400 center (at least not until I find a pair of 1.2tl's!), and I'm not set on Polk - anything that sounds great, matches sonically with my 2.3s, and is available in a black cabinet will work.