Good beginer Moniter Lizzard?

Im not going to get another reptile but i was just wondering if and when the time comes i would be able to get a moniter whcih one would be good for begginers. Or would a iguana be better, although i think i would want something that takes up less space and im also worried about dealing with an adult male (iv come across them in the widl, they arnt fun.) the last reptile show i went to i was cheking out the savanna moniters, whats the story on them, i know they dont get too big, 2.5-5 feet.