My 10 cents..
The best sounding cabinet that I have ever plugged into was a new production Bogner 2x12 open back, consisting of one Celestion G12H-30 Anniversary and a Greenback 25. (this seems to be his new standard cabinet pairing)
But, I honestly haven't plugged into that many cabs in my life, so 'what do I know'?

I was mostly playing dirty Zeppelin-esque' riffs at a low-moderate volume in an isolation room in GC, but even the cleans sounded sweet to me, and I had a hard time trying to get it to sound bad.
It just had everything that
I would want in a 2x12 and the speakers seemed to fill each other out
very well.
If I get back on stage, that's what I'll be carrying,,,,but I do mostly hard/classic rock.
I bought one extra of the G12H-30 (used), and it's just sitting here if you'd like to try it....of the 5 or 6 different Celestions that I have tried in the last year, it is my favorite.
It has a nice sizzle on top and real full, punchy low mids, without coloring my amp too much. It gets me a nice Page'y breakup that I really like.
It doesn't need to be pushed hard to sound good either, which I like.
Good luck, and let me know if you'd like to try this speaker...it would be NO HASSLE at all for me to drop it in UPS because they pick up here everyday anyway.
If I was trying to "fit you" to a cab, I'd have to know you better and know your playing style, and tone preference.

I can't justify expensive speakers to my wife, so I'm also speaking from a low-budget standpoint.