I am finalizing my rig, and have decided to go with the Shuttle 9. I am having an issue with what cab(s) to pair with this potent amp. I want to get (2) 8 ohm cabs so I have the flexibilty to use separately, or stacked VERTICALLY together for larger rooms without PA support. I have ruled out the UBERS as stacked on their side would not be an option. I have corresponded with Jeff Genzler, and he will do a custom NEOX-210T in an 8 ohm version. Which of these would be a better choice for a classic rock band using my EBMM Stingray basses. Thanks!