I vote veiled because I heard that they're a little easier to take care of/more tolerant of lower humidity. My suggestion is to get a baby and raise it. Then you can put in the time and effort to hand feed it and try to handle it from the start. It was great to watch Herbert grow up into the big boy that he is now. You can normally find them at petco for like $59.99. Veiled chams are also my favorite so I'm a little biased. Here is what I got to experience.
First day that we got him. Ate crickets from my hand on the second day.
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A little older. Falling asleep on us after turning out the living room lights at night.
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Teenager. Hormones kicking in. Dominant display to claim his territory
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Him yesterday watching me write a long post on here. He's about 10 months old now.
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My wife and I love Herbert like a son. He's always doing something silly. But like I said, this is just my opinion and I'm obviously biased towards the veiled! But a lot of them can be grumpy and not enjoy or tolerate being handled. We just lucked out and put in a lot of time with him since he was a baby. I also vote male because I read that they tend to have a longer lifespan, due to the fact that they're not producing and laying eggs. Another thing to consider is cage size. I started out with a 16x16x30" reptibreeze chameleon kit, but he quickly outgrew it. I wish I would've just started with a 24x24x48" which is an acceptable size for a full grown adult.