Hurricanes seem to be a better choice in matched and tournament play. They are cheaper, simetric deployment usually means, that you will not need more than 15" range, as well as your opponents will get to you much faster, so lower minimum range is always better.
From the less obvious pros of a Hurricane over a longstrike, the base of the first one is smaller, so you will have less issues with positioning your deployment.
With onslaught, the"potential" damage of a Hurricane is greater, than that of a longstrike. Hurricane gets a total of 8/24 potential damage per action, compared to longstrikes 8/20. Yes, longstrike Has higher strength, but crits do the majority of ingame dmg and more dice, usually means more crits.
Another thing, without the longstrike, you will not have access to the faction specific quad, which means, that you will be less tempted to turn your Wild Dice for those quads a d can spend it elsewhere, usually for initiative, which will then allow you to activate your hurricanes before the opponent Has a chance to act and you will remove from the board models, which have not activated and decrease the opponents activation advantage.
I took my SCE to a local tournent last week and placed first with this list:
1x Hunter Prime
2x Raptor with Hurricane Xbow
2x Gryph Hound
2x Aetherwing
Hope this helps a bit.