AVS FAN
As you have suggested, the product catalog is pretty large and there is overlap. I believe this results from how their speakers originate:
1. Some are original designs
2. Some were requested by people who had no skills to build them at home (and had Salk build them) and turned out to be so good that they remained in the catalog
3. Some are direct offshoots of very good sounding floorstanders
Below is a very interesting discussion with Jim Salk...which you have probably already read...but if not, enjoy.
The Salk website suggests a phone call so that a potential customer can share information about their room, music, equipment, and listening habits...which should result in narrowing the "speaker candidate list" to a more manageable level.
I have no doubt that Salk has multiple options that will satisfy the "romantic and airy" request. Personally, I'm a huge fan of the RAAL for open and airy...but I've also heard Song3 BeAT...and the Satori Beryllium is pretty special as well.
https://www.reddit.com/r/audiophile/comments/4nw0i7/im_jim_salk_founder_of_salk_sound_ama/