Awww thats so sad. Sorry for your loss. If you plan on getting another perhaps you may consider an autopsy. You could see what was wrong and could improve it for your next cham
I would reccommend starting with a veiled. I bought my first cham, a female veiled, about 6 months ago. She has been healthy since. Indeed veileds are hardier than panthers, they can tolerate a mistake for a little bit until it gets fixed, while if you make the same mistake with a panther it...
Umm if they are both male then you shouldnt have 2 in the same cage. I have 1 male and 1 female, they are pretty cool little creatures if cared for properly:)