I got accustomed to using oil-based ink during the semester. Now in my spare time I'm using the Speedball water-soluble ink... it's different, that's for certain.
I've been printing on Ingres ZERK paper, which holds up very well to all media. The only thing I don't like is how the Speedball ink sits on the paper's surface. When I sit down to do this again I'm going to choose a rice or similar Japanese paper and see what happens.