New to Travel trailers

I converted a 32 foot cargo trailer into one with living quarters . We used it to haul our jeep out into the desert. The upside is you have a huge living space (they call it a garage in toy hauler terms) that we used for dinners for the group and in inclement weather. With kids, I would look into toy haulers because of that feature. I like smooth sided trailer, I have a work and play toy hauler now, it is a cargo trailer that has living quarters added to it. It is strong but heavy. My truck pulls it without an issue. I don't care for the aluminum sided trailers. personal preference.
As was mentioned, first off figure out if and what your tow vehicle can handle. What is your tow vehicle that you plan on using.