What tow vehicle do you have

[Jim-n-Kathy]

I'm Jim [wife Kathy] . We just purchased an 06 2955 Montana. Now I need to upgrade my 02 1500 4WD Silverado. I did work for GM for nearly 40 years-so I have always owned GM vehicles. However, this time I plan to choose the unit that works the best. I would love to stay with gas instead of diesel if possible. We plan to use the trailer a lot [hopefully working our way to about 1 year of full timing. Anyway, I would love to hear from anyone who may be towing an RV like ours with a gas truck als what brand]. The in's and outs.
Things like fuel mileage and 4wd or not and what brand and 3/4 or 1 ton.

Thanks,
Jim in Folsom, CA