I just bought a second hand Video Assist 4K to use with my Panasonic GH5’s. I love the Video Assist 4K thought to be truthful they are heavy on battery power, I tend to use them on mains power when I can. Stupidly like many companies they use the Canon LP-E6 Lithium-Ion batteries that are not beefy enough for the job instead of using good old Sony “L” batteries.
Both my site partners H Preston Media and Production Gear sell these monitors.
For all your video production needs in Scotland, get in touch with Small Video Productions