Nearly got one of those.
Rudicollis is a cool species. The pair we had at the zoo were always angry when you opened their enclosure, but they never attacked or anything, they just sat there and got all puffy and hissed at you. Then when they realized you had food they went bananas. Once they had their food you had to close the door, because they would come looking for more really quick.
My favorite species of Varanus, other than the Komodo we had- but I can't ever have one of those at home, was V. prasinus. If I ever had a monitor species at home it would be prasinus. They are just so cool.
-Wade