Atomic cabs run in conjunction with another guitar cab & older Atomic Cabs

[Sevenstringer]

(1) Atomic cabs run in conjunction with another guitar cab & (2) Older Atomic Cabs

Anyone run 2 Reactor cabs with a standard 4x12 cab (or 2x12) ?
How does it sound? I would be curious to see the results.

AND

How are the older Atomic cabs? 18 watts
Sound compared to the Reactors? Reliability? etc
Like the one in the pic here:

 

[hussamd]

I am running with one powered atomic cab and one Line6 4x12 V30 powered by Carvin TS100 tube power amp. They do sound different for sure. The atomic is full range and it is brighter than the 4x12. The 4x12 as expected will sound dark and tight. I like the mix personally. I am not ready to give up my 4x12 yet.