Ive owned multiple of both, they are VERY different bows. If you want a compact, no frills hunting bow, the Kanati has the edge in my book as you can have it down to 56" drawing to 28.
If you want more options on materials, and don't mind a little longer bow, The Whip has it.
They are both quite, fast etc.... the Whip may be a tad quieter but its a non issue with either. If your going to order a new one you can get a Whip spec'd out just as you order it in about 30 days.
Jason is a bit behind and not taking orders the rest of the year.