The resolution is bad on the CV1 if you use the Oculus Go you immediately notice how much better it is.
Probably depends what you are playing/using it for... I'm always surprised by how good games like Robo Recall look when I try them again, the art style seems to really hide the lack resolution and they look fantastic.
Equally playing flight sims or racing sims, or just games with a lot of fine detail in general, the lack of resolution is glaringly obvious and I personally find it very immersion killing.