Speaker for my second 4x12

Hey Guys, great site and great looking and what i heard sounding speaker.
I searched for a similar topic and couldnt find anything, so hope you can help me here.

I Play through a Laney vh100r on a Peavey 412MS, the old one with the great celetions g12k85. I mixed them with old marshall v30 out of a jcm800 cabinet in X patterns. Sounds AWESOME. The box is slant.

Now i just bought a straight, empty cabinet from the 70. really orange like. not that huge volume, but more volume and more stiff than a marshall like cabinet. great wood. But yeah there are still no speakers inside.

in fact that i am the only guitar player in one band, i need the second cabinet. i play one on the left an one on the right side of stage. most time hardcore punk like without mics. haha

I love the g12k/v30 combo. maybe because of the low end of g12k i will put that mix in the straight cabinet. but this i will see then.

Right now im looking for speakers which not sound the same. the second cabinet should add a nice tone to my speakers im using yet. i use humbucker and singlecoil sounds and try to get a huge, heavy, crunch tone. i play slightly droped but not in a modern way of metal sounds. i need a chunky thight low end for heavy as hell, fast palm mutes and a great resolution when i play open chords.

So now, its your part. i watched every youtube video i could find and i just dont know which combination or single speakers i should buy.

Everyone talks about et65/retro30. seems to be nice but i think it is a little to modern. both are great but maybe too smooth.

I really love the sound of the reaper in this video: https://www.youtube.com/watch?v=Wr8ZiQDxznU thats kind of midrange i like. the veteran is nice too with that darker sound. maybe a good rough and loud combination?

Here i love the veteran: https://www.youtube.com/watch?v=TMYnuC2kUjQ but also the chunk of the v30. i know thats both more modern sounding videos, but i think i can hear what i can do with them and sometimes i need this sounds too.

I think the speakers can sound a little darker because the laney vh100r has a lot of highs and presence if you want it.

I was also thinking of et90/vet30. is that the better choice if im looking for a huge rough tone with tight lows?

Its really hard to describe that kind of sound especially cause english is not my motherlanguage.

Hope you can help me.
thanks a lot

Best regards from Berlin

Paul