I signed up for the $45 extreme 35/3 120gb + bonus 80gb bandwidth, free modem rental for 45$ through Steve months ago for my new house I moved into this weekend. I prefer to use my own router (Asus RT-n66u) so I can't comment on the built in router/wifi with the modem, but the speed is blazing fast. I'm getting my full 35/3 (using ftp, not speedtest+speedboost).
Online billing shows the correct amount:
Hi-Speed Extreme + 80GB $84.99
Savings: Internet Discount $-39.99
Enhanced Wi-Fi Modem Rental $8.00
Savings: Internet Discount $-8.0