Monstermash:
As you probably saw in my post in that other thread, ElkMaster for me. My preference used to be LePro, then [...tried a bunch of other stuff...], then Triangle, and finally fell in love with ElkMaster. I'm a touch/feel player (have to be in straight pool), and I love the "feel" and "grip on the cue ball" that ElkMaster seems to give me. Elkies *definitely* hold chalk well (no matter the brand), and because of the seeming "grip" they offer me on the cue ball, I seem to have better control of the cue ball because I can "feel" it better.
So, to summarize the answers to your three questions below:
1. ElkMaster
2. Soft (Elkies are only available this way that I'm aware of)
3. Answered above.
Hope this is helpful,
-Sean