I am currently useing a Hartz cage but it seems to small for my New Robovorsky Hamster. I have a area that is about 2 feet by 4 feet. After adding a little "Home" a wheel a water bottle and a food bowl it seems to small, even for Thunder (His Name). Does anyone know of a better cage that is around $35? This is the cage he is in http://www.amazon.com/Hartz-Play-City-Extreme-Home/dp/B000HHOBRO/ref=sr_1_4?ie=UTF8&s=home-garden&qid=1278126552&sr=1-4