Martin Logan hasn't made a worthwhile speakers since they stopped making the Monolith III. As an old ML owner, there is nothing desirable or competitive about the new line.
If you must go hybrid/ESL then investigate the Innersound Eros III in its active version a very worthy rival to the Sound Labs with a much more Dynamic (punchy) Presentation like your Prodigy's vs. Maggies. The Innersounds compete with Dynamic speakers in their output and maintain the ESL sound and coherency. They are IMO are on a much higher performance level from your Prodigy's despite costing less.
I bring them up based on your input (what you've written) in the discussion, this seems like a it might be a good speaker for you. Too many ifs (from what others have said) in your system to go buy used Sound Labs it seems.