What crate material do you prefer?

My partner and I are going to be the very proud parents of a dobie soon, and we're waffling on what kind of crate to go with. I was originally thinking the large plastic ones because they offer a little more of a calm dark environment, can be cleaned easily, and can go on a plane if needed (we don't expect to have to do that). I do like that the wire ones sometimes have doors on the long side, which would fit in our home a little better and are a little more sturdy, but the openness of them is making me hesitate. I know there are covers for them, but those still require a level of cleaning that wiping plastic down doesn't.

What crate do you have for your pup and why do you like it?