Heather's (Navarre and some numbers) Mom here. I have used x pens extensively over the years and had great luck with them. While my dogs were always crate trained, when traveling, on camping trips, etc. the x pen was always a super alternative for doggy space. I never had an issue with them jumping up or out. Xpens also make great play pens for the human kids
 I didn't get in on the crate anxiety thread, but did you try both types of crates? I have both types, open wire mesh and the solid airline type. Shade wasn't picky, but Bella seems to prefer the open mesh type.