Chalet vs. Aliner

 Chalet LTW Aliner Sport
 Manufactured in Oregon.
 Manufactured in Pennsylvania.
None, depending on where you live.  Some savings on shipping if you buy from the closest manufacturer.
 Cabinets and arrangement. 1 stove, 1 sink, 1 drawer, 1 porta pottie cabinet.
 Cabinets and arrangement. 1 stove, 1 sink, microwave cabinet, multiple drawers and storage.
Aliner takes the same basic unit size and manages to get much more built in storage from the same basic floor plan.  To utilize the wasted space I would recommend adding an outside door on the sink side on the LTW.  This gives you access to space that would be lost otherwise.
 Air conditioning unit totally enclosed inside and mounted in the front of the LTW.
 Air conditioning unit hangs outside by the door.
In looking at the Chalet, if I ever have a problem with the air conditioner, it is going to be very difficult to remove or work on.  The Aliner access would be much easier, but it does stick out on the side.  I remain concerned that all of the condensation from the air conditioner must collect on the floor and go out though the holes in the floor.  Aliner's condensation portion hangs outside of the cabin.

 Spring suspension with wheel bearings that need to be pulled and greased every 10,000 miles.
 Torsion bar suspension with zerk fittings that allow for greasing bearings without pulling the wheels.
Most discussion groups indicate that torsion bar suspensions are superior to older springs especially in the ride and feel from the tow vehicle.  The ability to grease bearings through zerk fittings is also a plus.  Chris Hanson, president of Chalet, did write and tell me that they feel the spring suspension provide more support in the door area and that they have fewer problems with sagging and deformation.  This remains to be seen from personal experience.
 Floor is a composite similar to the wall construction.
 Floor is an oriented stringboard material that is guaranteed not to decay. Aliner has recently updated their website with information on the floor. 
I like the composite floor, some do not.  We find it strong and supportive.  It is less likely to experience rot and it reduces the weight of the unit.  On the other hand, there is not a lot to anchor cabinets, etc. to.  Like the walls it has a luan cover, with rigid foam core and another luan layer covered with an rv fiber mat material underneath.
 Walls composed of rigid foam sandwiched between fiberglass and plywood.  Vacuum pressed during manufacture.
 Walls composed of rigid foam sandwiched between fiberglass and a resin product.  Vacuum pressed during manufacture. See their website for latest description of these materials.
Despite various discussions, my research and a response from the CEO of Aliner on a discussion group indicates that the walls of both are now made the same way.  Aliner did make their from aluminum in a rolled press but this is  no longer true.  The various layers are glued, aligned, and then placed in a vacuum environment until set.
 Chalet produces a trailers and truck campers as well as the A-Frames.  Some have suggested that this may affect the focus and quality of the A-Frames.
Aliner has recently added information on the differences between their product and others.  Aliner is ONLY producing A-Frames at this time.