At this point, it seems that the download quality is the same as the live streaming. So unless you're really caught up in watching games live(and you will be after you're deprived of rugby long enough) then it'll be better just to use *REMOVED* as the quality is much better.
Also, the rugby world cup will be fine as Roger Sportsnet (you'll need basic cable) carries every single game live. Now if you go for a bigger package you can get all 4 of their stations (east, praries, mountain and west). They are for different timezones so you see more local stuff. As in the rogers east you'll see the toronto maple leafs hockey team instead of the Vancover Canucks. Anyway, they cover different games if there are games being played at the same time. i.e if East has Somoa vs Australia, the west channel may have Tonga vs England. So for that you will not have to worry.