Uromastyx help!!!!!!

I've fell in love with the uro's and doing my hw before i get one. I have two tanks that aren't being used at the time, which are a 40 gal. long and a aquarium style 40 gal, which one would be better for my soon to be uro?

well depending on if its a baby, the wider one would be better.
and it would not be able to live in either when it would be bigger, a 40 gallon BREEDER is minimum for them 36x18x18

thanks alot i was lookin at the 40 breeder today with the sliding lid

no probmle, but let me just say, the sliding lid gets really annoying after a while. But it works so what ever. Good luck w/ the lil guy :)