I am liking the new modes, especially [as-caterp] which, I think, gives the music a better feel. It does seem to make it easier to make matches, but in some cases it also makes it much harder because you overflow very easily if you don't take care to keep the grid clean.
I just thought that I should point out that with [as-wbX] 100 doesn't give 100% white, and 0 still puts some white blocks in, but 0.0 seems to have no white blocks at all. Not that it particularly matters.