8.25 setup, any ideas?

SO, I'm going to try to add some more pinion shim. I'm going to go from .027 to about .040 and see where that is, and adjust from there. Also, what benefit is there in using a solid spacer instead of a crush sleeve? I have to order my pinion shims online, and the place also offers solid spacers, so I'm trying to make up my mind before I order, and just get it all at once.