I have an old Mercedes ML500 and it can tow 3500kg. I have driven across the country with my heavy lunk of a car trailer with car on it, and it will sit on 120kph up any hill without trying AND I can park it anywhere ?
I used to have a Holden ute, and the tray on that was fantastic. Long and low so you could reach into it. I had a Hilux after that and I hated it as the tray is so high, it is a pain to get things in and out of. That is why I decided a comfortable SUV and a trailer is the better option for me.
That said, if I was travelling around the country to race events or similar all the time, it would be nice to have a big enclosed trailer, but I don't have the need for it at this stage.