Voted for Tsukihime.
Havent really played all of thouse games even.
Pretty much the only ones that I have somewhat finished are Tsukihime and Kagetsu Tohya, I liked em both. But Tsukihime is the one I enjoyed the most.
Did anyone play battle moon wars? this game contains many of kinoko nasu's character such as saber, shiki, and more of them. the gampelay is just like super robot wars, this is an interesting game for me ^^
Fate/Stay Night for me. Tsukihime is great but the art needs improving and it has no voices and a limited OST. A redone Tsukihime which fixed these things (and includes a Sacchin route) would certainly challenge F/SN.