I just switched my 4 lines today. I've only been throttled once about a year ago after going over 5gb. I also haven't had a 4G phone on tmobile, but I'm due for an upgrade in less than 2 weeks so I'll have all 4G phones on my family plan soon. I regularly use 7-8gb a month on Sprint. Streaming music and movies really ads up. Between Xfinity, Google Play, and Slacker radio I stream a lot of media.
"Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take; but as for me, give me liberty or give me death!"
-Patrick Henry, March 23, 1775