I'm on 30GB right now with my discount. Basically unlimited without throttled speeds. So I'm happy with that.
I never have an issue with throttled. Of course I only use 5-6 GB per month tops. (my average is 3-4).
Of course: I mostly just stream netflix/video so I prob just don't notice it.
So you'd rather blindly spend more money on an outdated plan vs. switching to a cheaper plan that would give you more data than you'd probably ever use?