Remember, quality of service is very important. Make sure you get good reception and fast data where you need to use your phone. All companies except T-Mobile add fees and taxes so your bill will be higher.
AT&T Unlimited Plus
First line: $90
Two lines $145
Extra lines: $20 each up to 8
Hotspot/Tethering: Up to 10 GB per line per month. Then throttled to 2G
Throttling after 22 G
AT&T Unlimited Choice
First line: $60
Two lines: $115
Extra lines $20 a month
3 MBS maximum speed
No tethering
Verizon
First line $80
Two lines $140
Each additional line is $20
Tethering: 10 GB per line
Throttling possible after 22 GB (but they say it won’t happen often)
Sprint
First line: $50
Two lines $90
You can get up to 5 lines for $90 under current promotion (new customers only)
Throttling: 23 GB
Tethering: 10 GB per month per line
T-Mobile (T-Mobile includes taxes and fees in quoted price)
One line: $70
Two or three lines $100 total
Tethering: 10 GB per line
Throttling: 28 GB per line
Sprint actually has a handy and mostly accurate chart comparing all the plans
This chart is from Sprint but it seems to be mostly accurate
