Looked for a long time.  This crate seemed best.  Folding and unfolding can be a little tricky the first couple of times you try it.  But the crate travels well.  It feels sturdy compared to other crates.  Double doors are convenient because the crate fits better in more spaces and you usually have access to the dog.  And the dog likes it.  It's her space wherever we go.  No problems so far.