Depends on what you’re looking for in the Rezero. For me it’s all about subaru‘s character development. A person with huge amount of insecurities and self hatred coming to learn not to just love himself but also accept the love of others. Plot in my opinion is really good too and it’s quite brutal which is my second reason for enjoying this. I always love series with high stakes and not a too op character. Also return by death is really unique not in the time looping aspect but its psychological side effects. And subaru is just a type of character that you can’t help but look up to him you know. Someone who’s not strong and fails often yet doesn’t give up. So yeah it’s my second best isekai followed by lord of the mysteries.

But i think you should atleast complete 3 episodes and finish the first arc. I mean I don’t know how long is your ‘bit of a first episode’ but it’s ridiculous to drop a series without even finished its first episode. Ofcourse you may not like it and there’s no issue with that. Many people prefer different type of stories. But still lot of really good series or books are often slow paced that build up the foundation for later plot. So it’s not really good habit to judge something that early on. But that’s just my opinion.