Defanitley the corn. Most experienced keepers will always give you the same anwser. I have three and love them all.

1.0 green iguana
1.0 red iguana
2.0.1 corn snakes,aztec,amelinistic,okeetee
1.0 ball python
0.0.1 tokay gecko
0.0.1 armadillo lizard
1.0 plated lizard
1.0 pixie frog
0.0.1 ornate box turtle