I don't know if there's any cories that can handle high temperatures well.
I touched my friends discus tank. The glass was warm.

His tank is lightly planted, with a few pieces of driftwood. But he uses carbon to keep the water really clear, no surface plants. The fish never hide (he got a few new ones and they chill in the back still). They follow you from one side of the tank to the other. Discus are considered pretty smart fish. The fish are pretty cool though. He's got some that are like, huge, maybe 7-10" top to bottom? They'll eat from your hand and everything. And they feel so funny when their faces touch your finger. He's got some really bright ones. I like the orange/yellow, white and wild types best. I'm not a fan of deep reds and blues together, which is what many of them are.
Besides that PFK article saying elephant nose are "not hot" which I assume is due to their more difficult care, I like it. I already planned around the elephant nose.. Nice sand substrate (which I want in all my tanks anyways), heavily planted. Plus I want to get him first, and not add anything until he's eating well. Specialized diet, I'm guessing it's heavily based off frozen foods for that tube mouth. I read on the PFK forum about someone having lot's of trouble getting theirs to eat, so precautions!
The article helped me out though. :D Or maybe it's just pushing me down a hopeless road even more!
1 elephant nose, a few butterflies, and these:
1 kribensis (did not know they were African!) just to keep him peaceful.
And a goooood sized school of these if I ever found them. They remind me of pencilfish, which I love. Should be big enough to not be eaten, over half the size of a butterfly fish:
Pareutropius buffei (Three Striped African Glass Catfish) — Seriously Fish
edit; just saw on a PFK article about elephant noses that they should be kept in groups of 5? The kind I want at least.
This is conflicting, I read on seriously fish that they should be kept alone, unless you have a very large tank because they fight each other. Thoroughly confused.