I actually love the keto diet.
I have used Palumbo's one in early 2007 to flush most of my fat before switching to a carb-protein diet again 3 months out of the show.
I used it again last year but my biggest mistake, just like this year, is that I started the diet at 18% bf at least !!
I know, stupid, but I always get caught up in the "numbers" in the off-season.
So last year I started with the Keto diet, t3, clen, gh + LOT of cardio
All at once.
I got to 10% bf SUPER quick.
but then I was fucked and I couldn't get any lower so I had to quit the diet.
This year I read some stuff that Chris Aceto wrote about Troy Alves's diet, he said that in order to get in spectacular condition, one must get to 8-9%bf without doing much in term of drugs, cardio or extreme dieting.
So I want to do this nice and slow, and then I'll get fucking ripped 
well, I'll try.
I have never been fucking ripped, plus I always have a fat face just like Kuclo
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When i want to strip some bf quick, i use the keto diet as well, its great for getting the bloat and a few lbs of fat off real quick.
But what i think works is a bit of both worlds type approach.
I talked with toney freeman after the 2008 olympia when he looked fantastic. And I asked him if he really worked with palumbo and if he did his diet.
He said NO! He did use dave before, but dave had him doing the same diet as a 202 competitor so he dropped him like a bad habit. Anways, he said what he did was, he dieted for 10 or 12 weeks total ( i cant remember ) but he said the first quarter of the diet was keto, then after he dropped the initial water/bloat and fat, he added some carbs back in ( cycled them high/low..whatever ) then as the contest got closer like 4 weeks out he went back to a keto approach to get the last bit of fat off.
IMO this would be a great way to lose the fat, stay energized, and keep your fullness/harness throughout.
I know disgusted does something similar and it works.