I have had WED7 2 years ago and used it on 40 dives. It was probably early unit and it was piece of junk. Yes once the HDMI cable was replaced with newer version I could finally see the image. But then the unit started to act erratically, the buttons were responding like on random basis. There was no way to update the firmware so I returned the unit. The screen wasn't really usable in shallower depths. Also buoyancy is less then optimal - it is a brick and need a lot to compensate.
@DiversLens since you mentioned FX3 I am guessing you are serious about video work and will want to shoot Slog3 and perhaps deliver in HDR. I am shooting A1 - different sensor, perhaps similar philosophy but IDK. With A1 I am shooting based on waveform on my Shinobi monitor interpreting clean HDMI log signal into HDR HLG. This gives me maximum brightness keeping the waveform just at the top. At bright scenes my A1 monitor is unreadable while Shinobi shows beautiful scene.
So to sum this up if your intentions are similar to mine then you have currently only two options for UW monitors - Shinobi/Ninja and SmallHD Ultra5. These Weefines and Supes won't work as they do not have HDR Log interpreting - but I would be happy if owners of recent versions would prove me wrong.
Either way good luck, I am in awe what A1 sensor can produce.
P.S. since I am also shooting stills I am contemplating to sell my Shinobi setup and splash for SmallHD - just because their PageOS and Nauticam interface might allow me access settings underwater or even create dedicated presets for stills and video. I can't see Shinobi on Nauticam website anymore. only Ninja. So my Shinobi setup might be for sale. But need to put my hands on SmallHD first.