Improving on the Sonata IIIs, which speakers?

I’m casually considering either a sideways or step up from the Sonata IIIs for perhaps not a very good reason… merely esthetics. A color change.

I don’t like the thought of losing the Esotar II tweeter, nor the ease with which a good amp can drive them with. I’d also hate to see a far bigger-taller speaker be the one to improve upon or equal them.

I listen near field equa distance from the speakers. They’ll reside on a short wall in a 14x21x8+ roughly, closed off room. I do have a sub.

I saw some reviews on the PSB line up from J Atkinson, & Wes Phillips on the PSB models retailing for $4K+, $5K & $7K…. which appeal to me somewhat… but I’ve like all other times not the capacity to personally audition the PSBs.

I’d also prefer not to invest further by very much, if at all. Hence the ‘sideways’ ideology.

Any thoughts here are appreciated. Thanks much.