After my first road trip towing my 6k lb travel trailer with a tongue load of 600 lbs using my 2003 Suburban 1500, I was quite satisfied with the ride and performance, but it really struggled on the steeper mountain inclines. I am starting to consider other options with higher tow capacity and possibly upgrade my travel trailer in the future. My wish list is an older model vehicle (to try to keep cost down to 10 k range) either king cab pick up which would give me option for 5th wheel in the future, but more ideal is a SUV. I like the space for on the road enclosed storage when exploring my destination and lots of room for 3 plus dog. Thinking of older 2500 suburban or excursion. Would like to get 10mpg while towing. Maybe financing newer vehicle could be an option. Any input, feedback or recommendations? Vehicle would be used in between trips as a daily driver for wife. I realize 10k is probably not very practical, but anything more than that would need to be financed.