I must warn you that if you're going to choose Arcueid's path, there's a huge possibility you will end up crying like a little girl.
That being said, and in case you liked Tsukihime, you definitively will feel like playing Kagetsu Tohya and Tsukihime+disk.
Kagetsu happens a year after the events in Tsukihime. It has the main story and 10 unlockable little stories, 7 written by Nasu and the other 3 being fan-fic.
The game system is a motherfucker and it takes quite a time to understand how it works, but the visual novel is as really enjoyable and it makes you want to explore it more. I like too the general humour Type-Moon puts into the daily messages or the "easter eggs". Also, Len.
Tsukihime + Disk has 3 alternate stories that are somehow related to Tsukihime. It's interesting nonetheless.
As a side note, I started watching the anime. It's pretty disappointing, I have to say. It lacks the feeling the VS had.
It's possibly because it's happening too fast: but it feels more like a trailer than an actual serie. I'd say I enjoyed the way Shiki used to describe everything, how he used to think; it made it feel much more interesting, and somehow personal. That, and the music. However, the series lacks this, which leads to make me feel it's… not right. I also didn't like the artstyle. And believe me, the art is not the strongest weapon in the VS, but it definitively fits better somehow…
If the manga is like this, then I have to say you will really enjoy the novel more than anything else. From the little I know, it is more related to the game than anything else; I'll check it as soon as I can, but, all in all, the anime is not what I thought it would be, and if the manga goes the same way then they really don't even reach the highness of the novel.