I also have both but use the wire one here at the house. My plastic ones are smaller and I only use those when we are traveling. The wire one is the large one so if need be I can put the food and water in there. If I was going to buy one, (mine were given to me) I would buy a small wire one. Like stated above, they fold down for travel, and you can cover it if you need to. I did use the plastic one to train my first yorkie, he was in it at night, and it worked just fine. |