Well I guess there's two parts of the nvidia software experience, geforce and the control panel. The control panel is functionally fine, but the ui is very dated and the available features are a bit limited. Geforce is pretty widely reviled as far as I can tell so I won't go into it.
I just find the amd ui nice, and I like how you get quite simple and direct control over your video card, eg you can do some simple oc/undervolting, choose which software special sauce you want at a glance, and so on.
I mostly agree with this post, but
this is simply not true