Photographic Monitor Recommendations

Not a monitor for the PC to use for editing as I already have one of those, but a small one that I can hook to the HDMI output of my Canon 7D for viewing as I shoot.

For example this time of year I do Santa/child photos for a local charity. I shoot maybe 4-10 frames and let the parents pick the one they like. Using the camera’s display is difficult due to the small size.

I’m thinking a 7" or so display set on a light stand would be great. There are many on Amazon but I’d like input from any who are using these units.

I’m not limiting myself to these particular units, these are just examples of what I’m interested in.

Advice welcome.