Vandersteen 3A Sigs vs Klipsch Forte III

Mrdecibel, I understand what you're saying.
I'm not trying to have the forum "tell" me what I like or don't like. It's an individual thing. But, it's all this collective conversation that sheds light on what I may or may not like and how to determine in what direction I want to go. Ultimately it's my listening experience and no one else's that matters. But, your opinions do matter.
I am guilty of "analysis paralysis" at times. But I think that's kind of understandable in this hobby. There are so many subjective and objective variables that have to be considered. In many ways that's the appeal and mystic to it all. In the end, no one is ever wrong if he/she likes what they like. It's great to have a spot like this where ideas and opinions can be shared. 

@heardthat.......Why I said " for what I enjoy ". I am in my 60s and have been at this recorded music listening hobby since my early teens. I was in the industry as well. Owned much of it, and heard much of it ( equipment / speakers, etc ). Always had the ability of listening for myself. I have helped others with their systems ( I am semi retired ). Many were, and many were not, horn owners. There are an amazing amount of speakers out there to consider. But what you are finding is the passion folks here have about what they own. Many affluent hobbyists here on the 'Gon. You are not being " told " anything. Try and listen for yourself. It is all about you. Enjoy your journey. MrD

MrD, I'm with you brother. Didn't mean to infer I'm being told anything. I meant I'm not looking for anyone to make up my mind. That's my job. I'm just soaking up the knowledge, passion, and experience. 

I'm with MrD.
Over 60, starting with the Audio Visual Squad in grade school to building my own speakers, components or systems I found I have an "ear" for audio.
1) Referring back to your original question: horns, although very accurate, are directional with a narrow dispersion pattern and being mounted to a flat front board even the best (JBL 100 Studio Monitors) will ring with secondary audio diffractions.
2) The Vandersteens are Stealth aircraft in comparison. Separate speakers and enclosures mounted in mid air behind the grill and no flat surfaces.
Properly positioned they will produce your requirement of disappearing.
Having owned my first high end speakers for 30 years I feel your audio OCD and hesitation. They never sound the same at home as in the showroom, so to begin means making that first choice.
Have fun and be prepared to play with optimal positioning.

Hifiman55, Mrd.......I identify.