I love SG0 more than the original series, because it elevated the original even more. Also, I find the Sad Scientist a more compelling character.
spoiler
The revived Mad Scientist is just as compelling
On another note, I liked Okabe x Kurisu on its own after I watched the OG, but SG0 made me like Okabe x Mayuri better.
From what I can remember from both, since it’s been a while, I liked them both equally. I’m not the type to hate on a sequel series just because it’s different and I feel as though the writing didn’t take a major nosedive, so I can’t really complain about either.