difficulty settings

I'm new to the Tex Murphy series. I just recently bought all of the games off of gog. I beat Under A Killing Moon and now I'm playing Pandora Directive. Which difficulty should I play on?
You can start in gamer mode and switch to entertainment if you get really stuck. It's a hard game, but always logical, a masterpiece you will enjoy. Have fun.
There are also some tricks you can use in certain places. In one place, when you're about to get killed, you can leave the area and come back, which gives you more time to explore.
thank you both for the help