I've used a Suitcase and 4b extention cab for years now.
Mainly used for rehearsals and the band where I solely play doublebass. Every bass put through it at rehearsal sounds great, as do acoustic guitars and basses. Fantastic with doublebass, lovely clear, faithful reproduction, and with an FDeck HPF some serious volume without getting boomy.
In the band with electric bass I go straight to desk with monitors so don't use usually, but if I've had to, it's been great.
I'd love the full 'Dalek'.