Is the HP OmniBook 5 16 good for gaming?

Only for light or older titles. It relies on integrated Intel graphics, so modern games will run at low settings and frame rates. A laptop with a dedicated GPU is the better choice for gaming.

Does the screen support touch and a stylus?

The 1920 x 1200 panel is a touchscreen, so finger input works out of the box. Stylus support depends on the pen and is not a headline feature, so check before buying one.

How much RAM and storage should I pick?

16 GB RAM and 512 GB or 1 TB storage will age better than the 8 GB / 256 GB base. Everyday browsing and Office work run fine on 8 GB, but multitasking gets tight.

Is it heavy to carry every day?

At about 4 lb it is light for a 16-inch laptop, though a 13- or 14-inch model is easier in a backpack. It suits a desk-to-couch routine more than daily commuting.

How does it compare with a MacBook Air?

The OmniBook gives you a bigger touchscreen and Windows software for less money. The MacBook Air is lighter, quieter and has a sharper, brighter display, but a smaller screen.