2 Ferrets or Green Iguana?

Ferrets are fantastic! I have two and they are the best little animals. Mine don't smell bad so long as I wipe the trays of their cage out every day since they're mostly litter box trained (try teaching THAT to an iguana :) My baby boy is extremely sweet and just a kissy little thing, but the second I put him down he's crazy again. My little girl isn't much on cuddle time but will keep you entertained for hours. They aren't rodents-they're actually carnivores and related to cats. They act like a mix between kittens and puppies, very high energy and just hilarious. The only downside is their numerous medical problems. I take great care of my animals, and they only eat the best of the best, only drink filtered water, I make sure they're dark as soon as the sun goes down (important with ferrets to help prevent adrenal cancer), I do EVERYTHING I can for them. However, my baby boy Rascal went through adrenal cancer at age 4 and we almost lost him after surgery because he had an unforseen clotting disorder. He now has a permanent hernia. Recently he has been having trouble with an enlarged spleen (he was fine, it's something older ferrets just get and we had it checked to be sure) It's so swollen it drags on the ground and saps his energy, but it has been drastically improving. It will come and go forever and we must always be very careful not to let his tummy get any trauma, even bumping into something, or he could rupture it. So far he's been OK and should lead a normal lifespan. My little girl Keawea is now totally blind as of a few monthes ago, and has a huge benign tumor but is otherwise healthy. Both have severe tail acne. And my ferrets are only six and considered to be in fantastic shape... Both of my ferrets are Marshall Farms ferrets because I was only a kid and didn't know better when I got them, but if you can find a NON-Marshall ferret you should be set. Regardless of their problems, I just strive to help them holistically, as they cannot be medically helped. They are my furry children and although buying from MArshall Farms was a horrible idea, I wouldn't go back in time and leave them at the store even if I could