What was your hardest rom to find?

The hardest one was definately kof2001, it didnt take me that long to find, in fact i managed to get it before it came out to the masses, but the reason it was hard was some tard on kaillera said he'd give me an adress+pass to an ftp server with the game on it, but only if i played him kof 2000 for like a million years. It took 4ever b4 he gave me the adress.

Also, the first rom i ever found, kof2knd, now has become elusive and i cant find it, been lookin for a month.

I have also been looking for "garoun", can anyone tell me if it actually exists or am i just wasting my time looking?