Laptop screens range from around 11in to 17in. A smaller screen might be harder to work on and offer fewer ports, but it will be more portable. A 17in laptop, on the other hand, is a desktop replacement laptop and not designed to be moved around often. Generally, 13- or 14in is the sweet spot for portability and usability. While some cheap laptops have a resolution of 1366x768, there are Full HD, Quad HD and even 4K laptops available. A touchscreen will add to the cost and generally isn't needed on a laptop, but it is an extra convenience. Also lookout for a matt, non-reflective screen. What you won't find here is a laptop with a high refresh rate display, with that technology primarily used in gaming hardware. However, more consumer laptops with screens of 90Hz and above are coming to market these days, while Mini-LED displays are on the way soon.