Definitely go mints. They're by far my favorite terribilis with oranges a tight second. They are so bold and so hearty. Tap on the glass and they get all gangsta and say " whassup". They're going through a popularity boom at the moment. It seems everyone suddenly wants terribilis.

Looks like your imis were practicing before. Seems they've perfected it and now want to keep you occupied. Congrats. 18x18x24 is excellent for imis. Tons of climbing space. I wouldn't be surprised if there are tads in hidden locations that they are raising on they're own. . I'm going to be setting up a tank for some pumilio soon. My only dilemma is whether I get a set of bastimentos or siquirres.

Mantellas now eh. Good for you. I saw some nice ones at the herp show in Poughkeepsie a couple of weeks ago. Take pictures.