Is the VIZIO D50XG9 good for gaming?

It handles casual console play, but its 60Hz panel and entry-level processing are not built for fast competitive gaming. Serious gamers should look at sets with higher refresh rates and gaming features.

Yes, it accepts HDR content. Because it is an entry-level panel, the HDR effect is modest compared with brighter mid-range and premium TVs.

What apps does it have?

It runs Vizio SmartCast, which carries major streaming apps such as Netflix, Disney+, YouTube and Prime Video, and it supports casting from a phone or tablet.

Is a 50-inch screen right for my room?

A 50-inch set suits viewing distances of roughly 6 to 8 feet, which fits most bedrooms and small living rooms. Measure your wall or stand space before buying.

How does it compare with the TCL S-Class or Hisense A-Series?

All three are budget 4K sets. The Vizio is competitive on apps and casting, while rivals often offer similar picture quality; the better pick depends on which panel and features you value.