Mine is my 1938D Buffalo MS-66 .The next one is off the Internet , I call "Crazy Train ". What's YOURS ?
I have a soft-spot for my 1913-S (Variety 2) - not the prettiest nickel, but she'll do for now. And, I love the rainbow toning on my 1927-S...keeps getting better and better every year. Cheers.
My favorite is the 1942-P war nickel in Proof followed by the 1936 Buffalo Nickel in Satin Proof. The latter coin presents the Buffalo Nickel design in its best light in my opinion.