my classic 200 cost half what the same size in other brands wanted. maybe they're using lower rated components, but I don't know - there's really only a handful of factories building these things and even fewer component providers (BAL, Dexter, etc).
i think the other brands offer a few upgrades and a much steeper price - maybe the rooftop is a bit quieter, or the fridge a bit fancier - maybe an oven or three/four burner stove.
think about how you intend to use your trailer, and what your method of travel is. i bought mine as a mobile motel room to lug around - some place to eat, sleep and maybe watch TV when it's raining. I didn't buy it to have a luxury apartment and live in it full time, so upgraded internals and cargo capacity aren't super important to me.