Sean Combs UNFORGIVEN is said to be a clone of MILLESIME IMPERIAL. Puff Daddy, or whatever it is these days was supposedly a big fan of Creed MI. UNFORGIVEN is direct rip on MI.
Some think it has better longevity.
Personally, I have just sort of rediscovered MI and think it's awesome.
Pens and Floris don't make anything like that to my knowledge. MI has a sort of melon note and some sea salt notes. Personally, I say suck it up and buy the Creed.
I've been addicted to my MI recently. Smells delicious.
Unforgiven: Multiplatinum Edition I think is the one you are thinking of, though that is discontinued. Another alternative which is similar (but not a direct knockoff) is Love and Luck by Ed Hardy. Odds are your best bet is to stick with the MI and get it at a discounted rate/on a split (which brings the price down to about $70 for 50ml, not much more than a normal designer fragrance).