That's my point. Kane started off rapping regular. He had a couple of joints on his first album with uptempo beats (Raw and Set It Off, and later The Wrath of Kane). Rakim upped the ante with Follow The Leader and later Let The Rhythm Hit Em, which were uptempo songs, but they weren't speed rapping.
Then on the Juice Soundtrack BDK had a song called Nuff Respect, which may have been the beginning of Speed Rap.
I understand what he was trying to do, but I didn't like it.
So to answer your question, I liked Kane better when he rapped at regular speed. Ditto for Busta. I liked the way he was rapping on Put Your Hands Where My Eyes Could See. I didn't really care for the faster stuff because I couldn't understand what he was saying.