Yeah, going on someone else's opinion on what episodes are good and bad is doing yourself in injustice. Everyone's likes and dislikes will be different. Even the supposedly "universally" good and bad episodes will have people who dislike/advocate them respectively. Honestly, I'd just pick one series, whichever you think will suit you, and run with it. Then choose another one and repeat as needed. The material will always be there so it's not like there's a hurry.