This is the case I use. However, instead of using the sleeve that comes with it (doesn't fit in it), I just went to Wal-Mart and paid $3.00 for some styrofoam. I cut off a strip and placed it in the bottom of the case for cushion. It works perfectly!
It's got more than enough room for the power brick, mouse, any accessories plus papers and stuff too. I think it's actually smaller and easier to deal...