Sequels over Prequels. For me, it isn’t even much of a contest - despite them both trilogies having numerous issues, both being underwhelming, and far removed from the qualities and feel of the OT.
I’ll take the Sequels as they are simply less boring to watch; the PT is a great engaging story on paper - yet delivered a vapid, dull, unappealing, poor-CGId, borefest… that has so many needless inconsistencies and retcons to the OT (as well as much-changed lore to what had been established in the official released material before). Plus the many soulless unlikeable characters, mind-numbing dialogue, and inane acting performances in the PT (as well as poor writing / dumbing down of characters’ agency and decisions). Ugh. Then we have the subset of PT/GL fanboys/zealots… many of whom who still can’t accept others’ negative opinions / dislike on the PT without endless punctiliousness and contrarianism, or simply being abrasive or even threatening - that’s not really going to ever help change peoples’ opinions on the PT - by coming across akin to a whinier, inane, and more pathetic version of their fave PT pin-up Anakin.
The ST; I can accept that TFA played it safe whilst trying to give the message that the ST (and maybe new era of SW live-action content?) would be more akin in tone, pacing, and ‘vibe’ to the OT than the PT - leaving the other 2 ST films to take up the slack in bringing something fresh and taking chances / moving forward with the stories. And I enjoyed TLJ for doing just that (for the most part). For me, the pacing, choreography, CGI, and acting here is superior to the PT - and for the most part… the dialogue is too (‘somehow, low bars have returned’). Then TROS dropped the ball and failed to appeal as a film in itself (the story is just a mess), failed as a climax to the ST, and also as the finale of the ‘Skywalker Saga’ as a whole. Yet for all the flaws of the ST… at least I wasn’t bored watching them like I am with the PT.
Given the choice… I wouldn’t watch either the PT or ST again. I’d opt for the ‘Andor Trilogy’ (S1, S2, and Rogue One) followed by the OT and leave it there.
That’s just my take. If you like or love the PT and/or ST - then all power to you. As Wook used to say: ‘Star Wars is a buffet, enjoy the stuff you want, and leave the rest.’