I’ve had a pretty extended tenure with 30.2xd and you can follow my journey in this thread and any upgrades I have made with electronics + cables.
If I were to go back to the Harbeth house line, I would still likely come back to the 30.2xd.
If you like the Harbeth sound, then you can’t go wrong with the 30.2xd. It is definitely a chameleon of a speaker and it will sort of sound like what you throw at it. If you throw boring electronics at it, it will sound boring. One trait that I found is that it seemed like it could scale infinitely. I kept throwing more and more money at it. My electronics and cables definitely exceeded the 30.2xd, but it kept on keeping up.
I’ve heard it slow and gushy with tons of tube gear. I’ve heard it speedy and have a lot of resolution with some SS gear. I’ve also heard it with amazing 3D presentation. Vocal-centric, timbre-centric, speedier, however you want it, you can push it towards that way.
By nature, it is decently neutral with great vocals and great timbre and you just focus it towards a trait that you like.