They both do the job.
I just had an email from Alex about my post.
When i first got the midget I accidently had a -15dB switch on one of my pedals and couldn't get any volume out of the midget.
Now (having restored the input level cut - DOH!) on my shuttle9.2 with pre amp set gain 9 oclock Vol 3 oclock, to achieve simlar volumes the output is set 11oclock for the S12T and 3oclock on the super midget.
This is the volume we rehearse at with a loud kit and loud guitar.
I think that that tells me you need a lot of oomph to drive the midget.
Admittedly the S12T is a 4ohm cab and the midget an 8 ohm - I'd expect to have to crank the head to achieve similar results but this is a powerful head and 3 oclock is a long way round the dial
i have rehearsed with both cabs this week as we have a gig on Sunday (first in UK for 3 years!) and I was undecided which cab to take - so proper a/b testing done.
The S12T gets the gig - the sound is richer and fuller than the midget. The midget is stilll very new and probably needs breaking in a little more.
Having said all that I just want to point out that both cabs sound great to my ears.
I wouldn't say i'm a barefaced fanboi, like some, but I liked the product so much I've bought 2 now.....
I would be interested to discover how a double super midget rig sounds compared to my S12T - that would be interesting - any super midget owners wanna lend me one for an a/b back to back test?