OK, Mary Jane (she reminds me of the candy, thus the name) and the other lavs are at the top of the list....
My oldest SerpenCo snakes are the 2001's. My oldest corns however, by my guess, are probably over 15 years old... Iit's a pair I got from a friend that couldn't keep them, and he got them from someone, blah blah blah, so all I have to go on is their size, and both Max and Ruby are MONSTERS as corn snakes go - they make a 20-long seem small; if Ruby soaks she displaces almost all the water in her "jumbo" water bowl.
In-between I have a number of corn snakes that, except for one, were acquired online - maybe 50% from well known breeders, and 50% from before I really knew what I was doing and not much can be said about them other than they are lovely snakes which I'll need to run through breeding trials to find out what they really are

I think the oldest among those is J-Lo, a robust Okeetee (theoretically Love-line and het hypo, I presume B-type, or "sunkist") she's about twice the size of my other "proven" breeders (I say "proven" because I have not personally established than *any* of my snakes is willing or capable of breeding.) Anyway, I'd guess she's no less than 5 or 7 years old. Most the others are under five years old.
I also have 1 baby ball python, but I think they are just as habit-forming as corn snakes, leopard geckos, and cocaine so it's sure to get some friends sooner or later....
^Curtis