Is the TCL QM63K a Mini LED TV?

No. It uses a standard LED backlight with QLED color. TCL's Mini LED sets are the QM7 and QM8 lines, which cost more and give deeper blacks.

Does it run Google TV or webOS?

This model runs webOS, not TCL's Google TV. The main streaming apps are there, but the home screen and remote differ from TCL's Google TV sets.

Is 85 inches too big for a normal living room?

It suits rooms where the couch sits roughly 9 to 12 feet from the screen. Closer than that, the picture can feel overwhelming and lower-quality sources look soft.

How many HDMI ports does it have?

It has four HDMI inputs, enough for a console, a streaming stick, a soundbar and a cable box. Check the port version if you need 4K at 120Hz for gaming.

Should I buy this or the QM7?

Choose the QM7 if dark-room movie contrast matters and you can accept a smaller size for the same budget. Pick the QM63K if sheer screen size in a bright room is the priority.