What is the best performing barrel for a spyder paintball gun?

I currently have a Spyder MR1 paintball gun which came with its 12″ standard barrel. I definitely want a new longer barrel and was wondering which barrel you think is the best to buy. I’m looking for the best performance wise, meaning whichever shoots the most accurate, farthest, etc..

Any knowledge will help…what size, type, or even just which barrels stink that i should not get.
Or a site that has it would be great. Thanks for anything
Is the 16″ Aero Twist Barrel any good for anybody who’s used it?

Spyder MR1 Tactical Paintball Marker Gun SNIPER SET

Spyder MR1 Tactical Paintball Marker Gun SNIPER SET

Black Spyder MR1 Paintball Gun Sniper Set. What’s Included in the Box. 2006 Spyder MR1 Marker. 12″ Muzzle Brake Barrel. 20oz CO2 Tank. GXG Stealth Mask with Visor & Anti Fog Lens. UFD Heavy Duty Coiled Remote with Quick Disconnect On/Off. 21″ GXG padded gun case. Premium 200 Round Hopper. Black Deluxe 6+1 Harness – Heavy Duty 140rd Tubes. 21″ Jerk Squeegee(color varies) Premium 1oz Empire Oil. Detachable Stock. Allen Wrenches. Barrel Plug. Elbow. Extra O’rings. Operators Manual. (more…)