Not knowing anything else about your endgame for aquiring these skills…I’d say Limitless would give you the best bang per exposure cycle.
Using Stark or Renaissance could probably work as well, but those subs have specific archetypes they help shape you into with discrete sets of goals to apply your skills toward, and are broader in scope.
Whereas Limitless feels honed in on helping you learn, integrate, and apply any information in any area you want to point your awareness at without an archetype and its accompanying goals…at least that’s the impression I got from running it for two cycles.
I just started running Stark ZP, and the drive to learn feels different and not as focused for me yet. Probably because this script has more areas to work on for me than what Limitless had to work on.
For example, I’ve noticed on Stark that I’ve allocated more time for contemplation and reduced time grinding and being “busy”, so the skills I’m developing are related to helping me generate ideas, solutions, and clarity rather than aquiring and applying tech skills, at least for the moment.
But Stark’s focus would probably express differently for you depending on how you direct it and what you want to do with your skill set.
I’ve never run Renaissance Man so can’t comment specifically about it.
Anyway, those are my two cents. Hope that helps.