Is the Vizio Quantum Pro good for gaming?

Yes. It has a 120 Hz panel, four HDMI ports and gaming features like variable refresh rate and low latency on supported inputs. It suits PS5 and Xbox Series X at 4K 120 Hz.

How does it compare with the TCL QM7 or Hisense U7?

It is similarly bright and priced competitively, but the TCL and Hisense sets generally upscale better and have more polished smart platforms. The Vizio holds its own for sports and gaming.

Does it support Dolby Vision and HDR10+?

It supports HDR10, HLG and Dolby Vision. HDR10+ is not supported, which matters mainly for some Amazon content.

What is included in the box?

The TV, two feet for the stand, a remote, batteries and a power cable. A wall mount is not included; it uses a 400 x 300 mm VESA pattern.

Is the 75-inch version worth it over the 65-inch?

If your room can seat viewers 8 to 12 feet back, the 75-inch gives a noticeably more cinematic picture. The 65-inch is the better fit for smaller rooms.