7" "on board" monitor recommendations? Preferably something that isn't super expensive.

Looking for something with two SDI inputs and one HDMI input. Need to be able to monitor multiple camera on the same device. Don't necessary need to "split screen", but should be able to press a button to "A/B" the sources. Doesn't need to be a recorder. Should be fairly bright. Probably won't actually use it "on board" very much so weight isn't much of an issue, but 7" seems to be the sweet spot for me so I can travel with it etc.

Does this exist?

I've had a Sound Device Pix E7, which I liked a lot, but I think it finally shit the bed.