This Review is for a 1995 Chinook Premier - the budget/cheaper version of the Concourse.
The two of us have owned our Chinook for seven years. Upgraded the batteries/electrical system to modern standards to improve ability to boondock, replaced 3 way fridge with AC/DC Danfoss compressor fridge (huge upgrade), a few other minor tweaks. Our longest trip was seven weeks to the maritime provinces of Canada. For the size, it's a very livable floor plan. Couch/dinette makes into a California King which we can make/unmake in a few minutes (we leave the foam topper/sheets made on the couch portion and stow 'extra' under the couch when it is up. Pillows and bedding go behind the couch). The wet bath looks tiny, but you can do everything you need to in there including a hot shower. We have a 'one man rule' -- only one person can be up at a time because it is tight but more open than most B's we've been in (this is a B ).
Easy to drive, ample power for passing, 11 mpg running at 65 mph. With the new refrigerator we don't have to be level, so setting up camp takes a couple of minutes as does tear down. I think this is a great 2 person motorhome for people who like to MOVE. Sitting in camp for a week or two? This is too cramped for that, but you can go almost anywhere in this rig and see things. We camp in front of our kid's houses when we visit, we go to national and state parks and BLM land. We've logged 60,000 miles and maybe 250 nights out so far and this well built machine has enabled us to experience a lot of places.
Despite the age of the unit, problems have been minimal. Most of the unit is original, including the AC and generator which still work. We had to replace the furnace this year. We had a leak where I installed a new fan (my bad) but I fixed that easy enough. The spare tire holder had to be rewelded. The original fuel pump caused the engine to stall out in high heat, which might explain why I got the unit with such low miles. Thanks to the internet, I knew to get that replaced and later drove through Death Valley in 120 F with the AC blasting with no problems.
Trail Wagons went bankrupt years ago and the unit is 27 years old, so obviously no warranty/factory support. This is built on the 1994 Ford E350 Econoline chassis, so there is still good support for that.