Box art wise, both are very much on par with each other. I tend not to focus on the external packaging as much as the effects though.
What Evolver said about the repetition of the “This scripting” I tend to agree with. I think it would a better effect by almost inverting the sentence structure, eg (dot points for each maybe): Enhance your ability to generate clear and controlled mental images during visualization exercises. Gain greater mastery over your creative imagination, by sharpening the vividness and precision of your inner visions. Feel empowered to intentionally craft positive mental imagery, making your visualizations more effective in supporting your personal growth and aspirations. But that’s just my perspective, framing it as “this is a mental picture of what the scripting achieves” rather than giving it a technical spin ironically helps the average person to “visualise” what is being talked about.
Overall, I’m still going for Mind’s Eye over Singularity. I haven’t run Singularity, but it feels like a more niche goal whereas LME has more applicability to a wide variety of tasks. And after reading some of the copy before the Main Features section, it feels likely that my current reading material was manifested as the result of running LME, since they align on multiple levels.