the shooter is stiffer and has alot less strech than the sniper. The sniper is more managable and better for casting. If you have used seagaur the sniper is like invis-X and the shooter is like abrais-x.
Most people that I know that use shooter use it to pitch and flip with. I personally just use the sniper. Much easier to manage.
There was a great line review at tackle warehouse I think about the lines.