I will make the first pair:

• Rezero : easily one the best isekai anime AND anime that is running right now. The story is amazing, the animation quality is good and is getting better season by season (talk about rarity!). The Characters on story and design level are very good. People say that it subverts troupes and while it does do that, I would argue that it actually expands them by its structure. An easy 8.5/10 from me.
• In another world with my smartphone : wish fulfillment trash. This wasted my time and gave me absolutely nothing good. Even the fan service is this softcore BS, the harem dynamic feels like a nerd got a seat between all the popular girls but this shit does not even do anything with it. No drama, everything is automatically solved by a fucking phone. Animation is very bare bones and is almost as static as a web novel. This anime exists as a jobs program for under employed animators and VAs. Utter trash 2.5/10.

Similarly recommend me any two isekai. The criteria is basically the contrast in your like-dislike of the two. If the good isekai is a 7/10 then the trash could be 3~4/10. You can also recommend me two mediocre 5~6/10 isekai if you have watched them 😀👍

https://preview.redd.it/lwlvw5t08oah1.png?width=1586&format=png&auto=webp&s=45fda3a5b3bcc3bf3104b2a8d460e94d1fcc2c7a

[SPOILER FOR ANIME S1E16]

>!Did anyone of you find this episode unintentionally funny? Like sure its Hermit's backstory. And its a sad one.!<

>!But the opening scene of the giant doom cannon pointing directly at the robo only planet full of poor decrepit robots... Then the Professor having a long nose like Pinocchio, because Pinocchio lies... Then the fairly standard scenes of "unity" and "friendship" that in other stories setup loss and betrayal... then the (almost universal) setup for a backstab that the robot researches got... and all this start to finish was under the 12min mark of the episode!<

>!All this was sooooo predictable that when the planet blew up, I started laughing. I felt weird initially, but then the anime threw this (pic related) scene at my face, It was like the animators (not the writer) know that this was so damn predictable and fucking hilarious, so they are laughing with us. "Ha fuckin dumbass could not smell the gunpowder until the trigger was pulled".!<

>!I am not impugning the writer, I'm just saying that this was so bloody predictable that it had the opposite effect on me. I laughed instead of feeling for Hermit.!<>!&#x200B;!<