A friendly reminder that isps do NOT care about you or your digital rights. Always best to buy directly from the OEM rather than from the telecommunications (unless you can't afford it). Do proper research before buying a phone!
This has been my experience. I live in a rural area that historically only Verizon has coverage over (and Verizon still has more consistent coverage than any other carrier here) so I'm on a prepaid plan they recently stopped offering for $25/month for 5GB of data. I only ever see a difference at large events in locations that don't frequently host events of that scale, and even then the amount of slowness varies depending on if they planned ahead and rolled out some temporary cell towers for extra bandwidth.
The only time I've been noticably throttled was a couple of years ago at a sold out concert at an up-and-coming venue that's now a weekday tour stop for mainstream rock and country bands