Which is best is a very subjective term. Roger mentioned "Value", again another subjective term, but I like it better than "best".
There are people that will tell brand such and such is best because it's what they have. Some will like a lot of glitz and systems. That may not be the highest value for all. To me the biggest value is the least cost in both initial dollars and continued costs, the least fuss with systems and systems failing. Then add the fun factor.
I'm on the other end of the spectrum from Roger and a few others. I purchased a new trailer for $10,000. My wife and I have spent somewhere around 100 nights in 2 1/5 years we've had it, towed it around 10,000 miles. We've had an absolute ball with it. Camped in all kinds of weather from thunder storms, to snow and ice, to warm and sunny. It doesn't have the additional weight
of dual pain windows
, a toilet, shower, AC, etc. It takes me less than 10 minutes to set up, and about that to hook up and leave.
My point is to look at what's important to you, where do you get what you want. Notice I didn't say need. Think carefully about wants, and why you want them. Our lives are filled with bigger and bigger. We're bombarded with glitzy homes, RV, automobiles, etc. advertising. Will the glitz make you happy. Will the having x, y or z in your trailer improve your life. Is the extra costs worth it. Costs include initial costs, maintenance, time to take care of, and fuss and bother. Example a shower requires larger water tank, large gray water tank, time and effort to empty, which sometimes is an hour or so in line at the dump station. A toilet requires an additional tank for black water, chemicals to keep the smell down (Note: I didn't say eliminate, cause there aint such a thing). If additional systems are important to you go for it, if glitz is important go for it.
My definition of "fit and finish" is "glitz". Not necessarily better but more on the shinny side.
As I said at the beginning "best" is subjective. What's "best" for you, is the best.