If it were only that simple.
Before you consider any new speaker you should understand the potential of your current speakers and the room. To optimize they're sound stage follow the manufactures placement directions. Also try a temporary placement of thirds. In your 16' deep room (16 divided by 3 = 5'4") locate the surface of the tweeter exactly 5' 4" from the wall behind the speaker and that same distance from the wall behind the listening position to your ears.
Begin with their tweeters distance apart between 5' and 6' with no toe in. Begin toe in in very small 1/8" increments while listening very carefully to the changes in the sound stage between adjustments.
This method can also be used using the short wall making sure the distance from the side wall does not match the distance to the front wall behind the speakers.
Your short list contains three very different speakers not including your current speakers.
Moving from dynamic to panel speakers is a substantial change and a huge difference compared to the radial you're considering.
I'm not a panel fan. The only panel system I would personally consider is from Sanders Sound Labs and that would be the entire system, amp, pre, and panels.
Since your placement is a close 2.5 feet from the back wall you might consider an open back baffle dynamic speaker such as a Nola.
Before you consider any new speaker you should understand the potential of your current speakers and the room. To optimize they're sound stage follow the manufactures placement directions. Also try a temporary placement of thirds. In your 16' deep room (16 divided by 3 = 5'4") locate the surface of the tweeter exactly 5' 4" from the wall behind the speaker and that same distance from the wall behind the listening position to your ears.
Begin with their tweeters distance apart between 5' and 6' with no toe in. Begin toe in in very small 1/8" increments while listening very carefully to the changes in the sound stage between adjustments.
This method can also be used using the short wall making sure the distance from the side wall does not match the distance to the front wall behind the speakers.
Your short list contains three very different speakers not including your current speakers.
Moving from dynamic to panel speakers is a substantial change and a huge difference compared to the radial you're considering.
I'm not a panel fan. The only panel system I would personally consider is from Sanders Sound Labs and that would be the entire system, amp, pre, and panels.
Since your placement is a close 2.5 feet from the back wall you might consider an open back baffle dynamic speaker such as a Nola.