one is much faster than the other one, the first number like you said is download, second one upload which is only important if you are going to be sending a lot of info (like sending large files or using voice over IP which consumes bandwidth in both directions)
I would say, take a look at the cheaper package and give it a try, not all ISPs actually deliver such speeds in a consistent manner
If you are going to be constantly downloading movies/music etc (be careful and do NOT share any materials using peer to peer software, RIAA/MPAA actively monitor these things and get pretty upset) then go for the faster one