well both are i3's that use a bowden extruder. So I wouldn't touch either and you will struggle with flexibles.
And with the extruder being mounted on the side, it's a longer bowden tube than most decent deltas use.
You've got a nice solid crossbar, why not just use a direct drive setup ?

Of the two the cr10 pro looks like the better implementation of the same thing.

But there should be something better around in that price range.