As of this week, all of the four major carriers are offering unlimited data that is not "deprioritized"* until you go over 22GB - 28GB.
When we were living in an apartment where wifi interference was horrible. We typically just turned off wifi and used cellular from our phones. (We also had 100 foot cords running to all three bedrooms from the router but that's a different story....)
I pay $200 on T-Mobile for 5 lines unlimited data with 14GB of tethering on each line.
Depriorotized -- your data is slowed down temporarily in congested areas to allow others to go at full speed when you go over the cap.
Throttled -- your speed is slowed down permanently to 2G speeds for the rest of the billing cycle when you go over the cap.