I had an Aliner Expedition and really liked it. I sold it (after messing up my back, but not on the trailer) and bought a Chalet later. The Chalet has a hydraulic lift that makes raising the roof easy, but even the Aliner's not bad if you're in reasonable shape. I believe Chalet is a little better quality. I sold the Chalet later for reasons not having to do with the trailer itself.
I love the open feel and light in these hardside popups, and they also feel very safe. Be aware that you can have some problems if you try to put them up or take down in high winds, and be sure you get a high wind kit (a very simple bit of wiring that keeps the two roof panels from flipping apart in the wind). I had both in high winds and it was a bit scary compared to a hardside trailer (I've also had those). But I love them and will probably eventually get another. Resale value is very good and they are quick to sell. There are other treads about them here. I actually made money on both trailers.