I am looking at buying a portable waste tank. Probably the 35 gallon Thetford Smart Tote XL. I was wondering if any one has any input from personal use with these. I can't find any reviews of them. I saw a lady exchanging one (27 gallon) at CW. She said they had only used it twice and it cracked and was leaking by the front wheels. She did say they loved it and had used a smaller one for several years with no problem.