I had a single 1126 for a little while, and was able to A/B it with the S112.
The 1126 definitely sounded bigger, with more headroom, but it was much wider-sounding - not a particularly good match for the big-booty'd MESA Walkabout I was using at the time. The S112 'speaks' more, and was (and still is) more suited to my tastes.