I've had two Logan trailers. One was 2007 4H XT with the Platinum LQ.  The second which I still have is a 2006 4H XTR with just the dressing room.

They are a steel frame with aluminum skin.  They have a Whiz Proof Aluminum floor.  And for me they have held up very well over the years of use.  If you don't have the rear tack, They have a huge last stall.  I frequently stuff two horses in the last stall when I need to haul 5 horses in my 4H trailer.

The LQ was installed by a subsidairy of Logan.  It used RV Industry standard parts.  Fridges, Furnaces, A/C, power convertor etc were all the type of products you find in most 5th wheels.  Cabinets were pressboard with a hardwood veneer surface.  They are well thought out.  Most of the little things were already in the trailer.  ie valves and lines to winterize the trailers water supply, Muck rake, horse water tank and hose, jiffy jack for flat repairs .  The Platinum version came with soft walls, a wall clock, and magazine racks.

It's not a platinum with a Outlaw conversion. But it is a good mid range trailer. Mine has traveled a lot of miles,  A lot of forest service and BLM gravel roads and still looks great,

If you look in the Trailer news section of this forum there is a review of how Logan build their trailers.

http://www.horsetrailerworld.com/forum/thread-view.asp?threadid=11485&posts=1

Logan suffered from the ecconomy downturn and was bought out in April 2009 by Titan Trailers. They are still built in Logan Utah, and much of the same staff is still in the building.