Another voice for the Tow vehicle being a truck. While your Burb or other SUV may handle the trailers your looking at very well. As a new full timer, chances are, the first trailer you purchase, will not really be suitable, and you will be looking at changing in a year or so, IF you were to have to purchase both the trailer and a tow vehicle, that's a much tougher hit, than just changing to a larger trailer or possibly a 5th wheel. Get a 3/4 ton truck to start to avoid the dilemma later.
happy motorin