Hello, I think it depends. What do you want to do with your video?
If you want to talk about your brand/company/product/yourself, you have to consider different factors like: what is your main goal? your target?your budget ? your customer expectations? You need to know all this things before begin.
To have different ideas of quality video you can take a look on these different companies for example:
-Demoduck is specialized in explainers and educational videos. If you want to explain something I think it's a good idea to take a look on their website. They have a video for example which talk about the Netflix system, and how to use it ! And you can see different type of video like 3D animation (
https://demoduck.com)
-Craftoon propose different types of video like TV commercial, product animation or explainers video. It can be interesting to go on their website and watch their portfolio. The 2D animation is very impressive, and if you want to do a video like this kind of video, you will enjoy the creativity and quality. If you prefer 3D animation, they have beautiful examples on their Youtube channel (
https://www.youtube.com/channel/UC6BpjiZi-6vxJs5PhJL3MYQ ) and on their website : (
https://craftoon.com)
-Skeleton propose very different kind of videos. Their portfolio is huge, and you can see 3D animation or promotional video. They are a different way of thinking, and propose original content. To watch their work (
https://www.skeletonproductions.com/)
But you can also search more examples on Google to have your own idea about quality video !
I hope my comment will help you