Help Select an True Bookshelf Speaker

LS3/5a’s.

NHT SuperZero or SuperOne.
Inexpensive, compact, not rear ported.

Only alternative for a true bookshelf speaker with no rear port:

https://www.youtube.com/watch?v=QA8_1PFUAaU&ab_channel=CharlesKeng

https://www.youtube.com/watch?v=cwpIYFWDfQ8&ab_channel=MyHifiNews

https://www.youtube.com/watch?v=up6ZpOGt66E&ab_channel=CharlesKeng

https://www.youtube.com/watch?v=aQYP2Qm2pAw&ab_channel=MinhHoanVu

https://www.youtube.com/watch?v=xFRAoSSsv8g&ab_channel=MyHifiNews

https://www.youtube.com/watch?v=IDYgTI-czog&t=51s&ab_channel=TMRAudio

With a rear port / passive radiator:

https://www.youtube.com/watch?v=Rt8A_0z_hLQ&ab_channel=%C4%90%E1%BB%A9cM%E1%BA%A1nhAudio-Gi%E1%BA%A3iTr%C3%ADKh%C3%B4ngGi%E1%BB%9BiH%E1%BA%A1n

https://www.youtube.com/watch?v=2DgNqgVGrTo&ab_channel=HiFiFan

https://www.youtube.com/watch?v=Apn-LzZEBdY&ab_channel=StereoChannel

But may need a sub(s) with either to warm it up a bit...

One of the most lauded 'true' bookshelf speakers today is the new EPOS ES-7N. Front ported and with a switch to enable bookshelf positioning. Product of the year from What HiFi 2024   $2195 USD    $2895 Canadian $

https://www.whathifi.com/reviews/epos-es-7n

This is a Karl-Heinz Fink design (he owns the brand) and Karl-Heinz is one of the busiest speaker designers out there.

Vandersteen VLR-CT, non-ported. Studio Electric M4, non-ported. ELAC Reference UniFi UBR62, front-ported, ELAC Debut DBR 62 front-ported. Range of prices $600-ish the pair (maybe less black Friday) to $3600/pair.