We looked at a number of 5th wheel like, Grand Design Solitude, Mobile suite, Luxe ,DRV, New Horizons all seem to be dark inside an the floor plans really did speak to us like our Kz Durango Gold... It was well layed out, very light inside, could handle 2k in storage an gross was a little over 14k at 40ft long ... Our Gold has large black an gray water tanks with only one outlet instead of two to empty waste water tanks which in my minded is a plus ... Best of all the price was in most cases 30 to 40K or more below the price point of the higher end units an had most of the same features of those high end units ...
Even thought Kz is a small company they have been around for a number of years building TT an 5th wheels, they are one of the few that has a bumper to bumper 2 year warranty. The Durango Gold line is rated for full time living along with the same bumper to bumper 2 year warranty ... Now days it's hard to find a company that will warranty a trailer for full time living unless your paying thought the nose an then it may not cover everything were Kz will no questions ask unless it was of course your fault for braking such ...
Check them out at https://www.kz-rv.com/
Or the Kz family form at http://kzfamilyforum.com/