Don't chalk up your dislike of the RBH to the ribbon tweet specifically. Their measurements indicate the RBH have nailed the midrange but do reveal a bit of a step down in response up above 6k, so the treble may be a bit reticent, particularly compared to the Paradigms. Other speakers with ribbons can and do have more flat response up high. So don't rule out the Philharmonic speakers, etc. They might split the difference between the RBH and Paradigms, and provide more long term listening pleasure.
The Paradigms at $5k/pair puts your budget in line with some serious contenders. While auditions may present a challenge, this is a big purchase (it would be for me, anyway), so it's worth some hassle and inconvenience to get it right.
Speakers in the same budgetary ballpark that I would consider would be the Mofi Pointsource 888 towers with a Pointsource 8 center. Maybe something from Philharmonic like the BMR ht towers with the matching ht center.