Hey man,
Sorry I didn't get back to you sooner, I haven't had a chance to read the forums this past couple of days, again sorry!
First off, I am by NO MEANS an expert on either species, far from it; but here is what I know.
Okay here's the deal. I'm gunna be 18 in a month and when I wanted the dums, I was about 14.5. The reason I Choose not to get it was at the time they just required too much space that I didn't have and I really couldn't interact with the lizard as much as I wanted to considering their personalities.
After reading that Tegu's could be house broken and how tame and smart they were, I just HAD to have one, and so I made the choice to get the Tegu, also they don't require as much space as a dums from what I've read, considering they can be allowed to roam free most of the time, while you're around.
Sorry, I know that doesn't help much, but it's the truth 
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0.0.1 Argentine Black and White Tegu
0.0.1 Baby Aru Green Tree Python
2.1 Bearded Dragon
0.0.4 Hatchling Bearded Dragons
1.1 Honduran Milksnake
1.0 Florida Brooksi Kingsnake
1.0 Blood Red Cornsnake
1.0 Jungle Carpet Python
0.1 Desert Kingsnake
1.0 Western Hognose Snake
1.0 Bull Mastiff

