For me Dragon Ball was ruined after Frieza saga.
Frieza was hyped to be strongest in the universe. But ordinay human (Dr. Gero) is capable of creating androids who are multiple times more powerful than Frieza himself. How? How can human setting camera to watch Humans vs Saiyans (Vegeta's power level at that time is around 18.000) can create Androids with power level much greater than 120.000.000 (Frieza's PL). How can that camera even catch Vegeta's moves, when Humans' eye can't caught Yamcha and Saibamen's moves? How can he even find material which can produce such speed?
There is a rumor that DB was supposed to end after Frieza's saga and IMO that has a lot of sense with whole Z name, hyping Frieza. If Toriyama didn't change his plans, I suppose he would not hype Frieza that much. I think Kai even said something like "Frieza is strongest", tho, how? when he should be aware of Buu's existence.
Tho, I love Dragon Ball, and I am glad that it went after Frieza saga, but for me it's not the same as Frieza Saga.