Shinji definalty!

Mayuri-san is interesting..but he doesn't compare to Shinji he's just too awesome!

Sadly, I know he's likely to lose here, but I really hope he doesn't. Frankly, I think he's much more interesting than Shinji, showcasing a wide swath of abilities and a far more complex style of fighting.

I'm going to go with Mayuri here - I really like Shinji, but his comedic character is much less interesting than Mayuri's sadistic, highly intelligent, analytical character.

Mayuri is definitely the more intriguing of the two. Also, while Shinji is indeed funny, when Mayuri is included in a comedic scene, I find it hysterical on a whole other level. The only things that really bugs me about Mayuri is his taste in hats (The first of which I actually rather liked), and his apparent inability to brush his teeth.