been using sunline sniper and assasin both cast good but is there better casting flouro. Any suggestions 

Guy on YouTube just did a recent full test of all the major fluoro brands.

 

 

Sniper is the best I've found, haven't used Shooter or Tatsu.

 

To me Sniper is perfect, have no reason to look elsewhere.  

 

Do you use some Reel Magic or similar product, stuff works.  

Seaguar makes some good fluorocarbon. 

Seaguar Tatsu is best all around fluorocarbon I saw it the market, If you want to spend more I also recommend Varivas absolute.

I’ve used red label, invisx, sniper, p-line, and sunline bms and have zero issues with any of them. The only one I didn’t like was the basix. 

I have Invizx on all my line. Still need to try Tatsu and both Sunline's.

Honestly, I love either Daiwa Samurai J Fluoro or Seaguar R18 LTD Hard. 

since we made it around to JDM, the single-best fluoro I've cast in finer diameters is Toray ExThread, which @Team9nine has also recommended in the past.  

      

Like @Cbump, been through many bulk spools of Red and Abrazx, single-charge spools of Tatsu.  

Many good recommendations on this thread - you'll probably only see subtle differences in the top lines, limpness vs abrasion and line memory, greater diameter/test differences between the extremes.  

I’ve tried a lot of them.  P-Line Tactical and Daiwa Samurai are  the best casting lines I’ve used, plus they’re strong 

Invizx and Sniper are the first 2 I’ve tried, and I’ve had zero issues with either of them. Then I tried Seagar Red Label to save some money on applications that don’t need the highest-quality line/sensitivity, like

reaction baits. I’d say a good value so far; no breakoffs (some have had that problem with Red Label). I’d buy all 3 again, no hesitation.

For spinning reels - Tatsu, Baitcasters Invizx 

I wish there was a cheat code but you really get what you pay for with fluorocarbon especially in thicker diameters. If you can afford it Tatsu is the best I’ve tried.
 

However the real key to great casting flouro is downsizing line diameter as much as you can get away with. Once you get to the .013 range, casting will start to suffer no matter what. 

Today Solarome Bass Superhard was excellent casting FC slight blue tone color. I used 12 lb for a few years until it became $35 for 82 yards, started out $35 for 200 meters.

Sunline original Shooter FC was 1st FC back in the early 90’s

Today I use 7 lb Sniper for spinning and 12 lb Tatsu for casting jigs. Both readily available and decent price.

Tom

PS, Tangle Free line conditioner is a must for me Casting FC line.

Solarome is Toray ExThread.  

 

They market that each dia/test receives its own formulation to optimize limp, low memory and abrasion resistance.