I like Conan/ Shinichi Kudo and Haibara Ai/ Miyano Shiho together but i have accepted the fact that Shinichi and Ran will get together. I can't see Ran dying or giving up on Shinichi. I think it's too late for that, she has been waiting for over 88+ volumes.
I can see Haibara dying though. I see her dying for Conan and right before she dies, she will confess to him.
oh and what about Shiho and Akai Shuichi? that might work... maybe not... idk. lol...