The new yearly Visible+ plan has 50GB of non-deprioritized data a month, not that I ever really had an issue on the normal Visible plan, free calling in Canada and Mexico, 2GB of data a day in Canada and Mexico, double the tethering speed and a free global pass per month. It is $395 which works out to $32.92 per month.

On Visible, your first 50GB of mobile data are not deprioritized.

Some people use a lot of mobile data - but I'm on my phone all day/night for business and pleasure, watch a lot of video content etc, but usually am within Wifi range of my home or office. I struggle to use more than 6GB of mobile data per month...

Before switching to Visible, I worried a lot about prioritization etc. After switching from Verizon (proper) -> Visible, and I can honestly say I haven't noticed any difference in performance. My bill is significantly lower though, which I do enjoy.

Looks like that's only on the nicer plan?

Looks like you're right. I pay $35 a month for my line - there's some $10 monthly credit they applied to my account. With their annual payment option, it's $33 monthly.