What speaker could safely be ordered without hearing it first?

Magico S2 or S3 Mk II or later, S5 if available.
I recently replaced a twenty year old pair of (upgraded) Monitor Audio RS-8s with a pair of Magico S5s. Bought second hand sight unseen, with no audition possible without incurring a trip to the other end of the country.

Reproduction and enjoyment are next level, there is no comparison. As expected given the cost.

Finish is superb, mine are sand blast anodized. New model finishes are also amazing, sadly out of my price range.

Your L-509X looks to be well engineered and its intimate, dynamic sound should complement the Magico’s well.

Nice table btw, did you make it?

Wow they look stunning in bronze and I know they'll sound awesome, I hope you're pleased!

See you've been busy putting some time into setting them up (measure, spirit level).
I'm guessing your sweetspot is mid cushion, may I suggest slightly more toe out - you want the tweeters firing just past (outside) your ears on each side.
Small changes will lead to optimum positioning. From experience, imaging is stunning!
A piece of string held eye level to the top of the speaker can make the alignment process easier, also useful for confirm equilateral positioning as Magico recommend and viewing of the beautiful assistant :)

I'm not sure how much my pair were previously played, they took quite a bit of running in for the balance to settle. They get fired up nearly every day now.

I also have a rug over flooring. I put a layer of mass loaded vinyl (Advanced Acoustics Soundproofing Mat) and later also some
Felt and Rubber, Acoustic Carpet Underlay beneath the rug to very good effect.

Meant to mention, don't forget to register them with Magico.