SmartView Duo

I have been offered one for £250 and wondered if anyone has any thoughts please?

As far as I am aware the advantage of the SmartView Duo over something like the FEELWORLD D71-H is that I get to display the scopes.

However, if ive researched right, the Feelworld will offer a better quality of screen and the ability to use it with software other than Resolve.

Plus the Feelworld is only £190.

The SmartView Duo does not have the scope functionality built-in. That's the SmartScope Duo. The displays are just regular SDI displays, so they will work with any video source not just Resolve.

Wrt quality, it's fine, not great. The screens have good color rendition (not sure about all models, mine is decent), but they have a very poor viewing angle, so they should be mounted straight ahead in roughly the same height as your eyes.

Also note they can not be calibrated properly, they are fairly blue-ish out of the box, but you can not correct for that.
Fine for non critical previews.