First, to get it on the table, the only sensible answer to any question about cabs is... It depends, and I don't know.
In my observation, there are rules of thumb assigning tone qualities to the different diameters: Tens are fast, fifteens are deep, and twelves are for cheap combo amps.
What's happened is that in the past few years, the knowledge and technology for designing speakers has advanced to the point where those rules no longer make sense, and in fact, it may no longer be meaningful to expect a particular tone from a particular driver diameter. In addition, there are systems with two drivers -- woofer and midrange -- that add a whole nother dimension to the picture.
Now, for the next answer... I don't know.
The problem is that my own frustration with commercial speaker designs, and my interest in learning how gear works, led me in the direction of DIY speakers. So I don't have informed opinions about commercial cabs! I've got 12" and 8" systems that I am quite happy with.
So now I will have to wait for others to offer opinions in this thread.