I haven’t owned any of them, so this is more of a general comment FWIW. I think the center speaker and subs are crucial to getting truly exceptional HT. You’re clearly covered in the sub dept. (great subs BTW), and for centers I’m very partial to those that have a dedicated midrange driver with the tweeter mounted above the mid. This is because the mids are so critical especially for vocals in HT they deserve their own driver, and that configuration also exhibits better and more uniform dispersion characteristics versus the more ubiquitous and simpler MTM design (I think concentric drivers like those in KEF may also do well in this regard). For this reason and although I respect their speakers, I’d reject Perlisten based on the design of their center. I can’t speak to Revel or KEF as I’ve not heard them but suspect they’d both be very good. I’d like to add Aerial as another one to check out as they’ve always excelled at producing superior center speakers I believe starting with their CC3. They’ve upgraded the design considerably since then, and their 7T towers would match perfectly with their current 7CC center speaker, and here’s a link just FYI…
https://aerialacoustics.com/7cc/
Hope this helps, and best of luck.