I second the mids or midas-devil vote. Great fish in any case. I would love to see the grown offspring of those two.
On another note, I wouldn't necessarily say that the other psoted "extreme devil" has pop eye. I have seen a number of very well-maintained, older, large-headed cichlids with bulging eyes. I don't know the cause but I am hesitant to automatically attribute it to the disease of popeye.