The Premier is normally $94.99
Internet Pricing & Plans serving Arizona | Cox Communications
I have the Preferred and normally stream about 2 movies and about 5-7 hours of TV week. I have my home computer, work laptop, Roku, Xbox and Kindle fire all hooked up to wireless and never have any problems, except for the odd modem reboot once in awhile.
If you do a fair amount of downloading and stream a lot more movies and TV, then I think the Premier package would work best for you; if you end up with COX.