I can`t stand the fast stuff, unless it`s so fast that it kinda goes into half time.
Generally the production sucks as well, as it`s hard to get room into the mix, so it kinda just ends up being noise, which is cool I suppose, but I did all that back in my industrial days, and it wasn`t clever.
Once it hits a certain speed it just loses it`s impact I think, and to a certian extent, the faster it goes the more drug oriented it is, mostly anyway.

If your gonna go down that route you need to check out the people who have been at it for years. Industrial Strength Records, and the old Dynamica stuff.
Ultraviolence was pretty well produced for hard and fast.