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.
Honestly, after watching both animes and playing through both games several times, I prefer SG0 anime too but as far as the VN goes I think I prefer the original there.
I love the story arc of SG0, but in the game makes it too easy to hit the bad endings and cut the whole story really short. They did it very well in the anime.
The ending of SG0… after the credits. so satisfying.