Re: gasoline or diesel
Welcome to the forum.
If you are planning to put on thousands of miles, over 10,000, a years, every year then look for a diesel. But if you are only going for a weekend, a week or two or/and travel less then 10,000 thousand miles a year go with a gas.
The diesel engine is built to run and not set in the garage which can bring on maintenance issues where the gas engine won't.
But like jimmy said, tell us more so we can help you more.