I own three pair of Omega speakers, Original Super 3 (wide baffle, RS5 driver), Super 3HO Monitor, and SAM. I have used them with both low power solid state (<30wpc) and SET.
Of the three the SAM is the "best" for what it does. I have used it solo in a small room and coupled with stereo Rythmik subwoofers. The improvement from additional bass support is not subtle. But I am using very "fast" stereo woofer modules crossed over at 200hz driven by 600 wpc.
I can compare the Super 3 single driver with the Super 3HO. The dual driver model adds additional midbass weight, but does not add significant additional deep bass. The big surprise is my oldest and ugliest (sorry Louis) speaker, the wide baffle super 3 with a RS5 driver retrofit. It gives me almost as much midbass as the dual driver model (with my amplification) while offering to my ears superior clarity of a single driver. It runs out of steam due to the limitations of the 4" driver, but I remain amazed at the size of the sound and the bass coming from this speaker. It is really a slightly smaller scale Super 3 XRS.
I have also had the chance to compare the Super 3 with the Super 3U. The latter is the same cabinet volume as the Super 3XRS in a stand mount. While the Super 3U sounded fuller than the Super 3, the difference is subtle. I would not choose the larger cabinet over the smaller one in a stand mount, especially if I were going to use subwoofers. I would imagine the difference between the CAM and SAM to be similar to that between the Super 3 and Super 3U. For my money the smaller speaker works out better.
Another option is a "Junior Six XRS". This is effectively a smaller XRS speaker using the alnico driver and would likely give you better bass than the SAM wihout needing stands. I don't know the price but looking at the price list one can guess at the range.
One option I haven't had the courage to explore is to see if Louis would make a Alnico speaker in a Super 3 XRS cabinet. The cabinet volume is identical to the CAM, it does not require stands, and it would give you the boundary gain from being closer to the floor. The Super 3XRS has a shockingly big sound - the Alnico driver would make it even more so.