I just played the 23" combo and have played the wide 2x12" combo recently. I liked 23" one better, but the comparison is not quite apples to apples since they have different speakers. C90 for the single 12 and V30 for the 2x12.
For what its worth, the 23" has great clarity and punch. I played it pretty loud too, as I am looking at upgrading my Express 5:25 which starts to loose its clarity even at moderate volume.
The only thing I could fault was it has a very slight boxiness to it. I'd guess that could be dialed out with some small adjustments, but it never bothered me enough in the hour I was playing to stop and try.
Weight is an issue for me and while I am sure I could manage the 23" combo, it is still heavy and I will probably end up with the short head and a 1x12" half open cab to start with. other cabs can always be tried later if need be.