There are things done to the 594 that seem to bring out that vintage vibe IT sounded KILLER with my MKII Mesa also sounded nice with my H but it just had something special with the Mesa.
As far as why I like the CU22 or others better.
Control Layout - I started out life as a F type player I like my controls simple ( less knobs are better ) and near the bridge.
I am not looking for a shorter scale I came from 25.5 " scale so the 25 1/4 on the 513 ( and others ) and the 25 on most of other PRS just works for me.
So far my Starla is the exception to that rule I believe the thin body makes it feel more like my other guitars.
I have always had a Love / Hate thing with G guitars love the sound BUT always felt a bit cramped except on Vs and SGs , I NEVER really bonded with a Les Paul as the neck pickup tended to be to dark for me.
I also love the fact that my Customs sound big and are so thin nice and close to the body when I play.
So I would say if you want a Killer guitar that leans to the " G " side of things , with a nice full neck and body with lots of tone options take a long look at the 594.
If you like a bit more room and live for the classic PRS to F thing look at a Custom 22 or McCarty or a 513 , 509 , NF3 , DC3
I see no wrong answer
just lots of fun