My standard advise is to take your best guess at what you want, then rent a similar unit to see what it is like to pull one down the road.
Among the many thing you will discover are,
* Is your tow vehicle up to the task.
* Do you mind getting 10 mpg or 23 liters/100km?
* Do you mind 280 mile or 450 km a day?
* Do you mind driving all day at 60 to 65 mph or 100 km/hr?
* Are you willing to do the routine checks and maintenance involved?
In the US there are over 300,000 TTs and fifth wheels made every years, the vast majority of owners have few if any issues, which are usually addressed by the dealer.
There are a few horror stories that you see on the board that is for sure. That is why a dealer you can trust is very important.
Depending on your camping background, you may find there is a big difference between camping and RVing.
