Looking for opinions on a good fluorocarbon line in 6LB for a BFS bait caster?

Seaguar Invisx is my go-to, very good stuff

^ InviszX is what I normally buy

Sunline Sniper Invizible.  

Fc sniper.

I don't do the BFS deal but I agree with the above posters about Seaguar Invisx, though I'd opt for Tatsu. Yes, the price tag is much higher but IMO, it is that much better of a fluorocarbon line and with 6lb test, there's no room for error. 

No recommendation just a question, why 6# specifically?  Thanks

I like Mastiff.  

15 minutes ago, Reel said:

I like Mastiff.  

 

Mind if I ask how it is compared to others, like Sniper or Tasty?

26 minutes ago, Reel said:

I like Mastiff.  

Ummm…. We are talking about fishing line. Not some beast you can throw a saddle on to ride around. That happens to bark. 
 

lol

What is your budget? If no budget, I’d get Tatsu. 6lb fluoro is dangerous. Get the best you can safely afford

2 hours ago, Sota said:

Ummm…. We are talking about fishing line. Not some beast you can throw a saddle on to ride around. That happens to bark. 
 

lol

I can spell it out if you like: Shimano Mastiff Fluorocarbon Fishing Line

Might not be the best of names but, maybe the best of line !!

The single-best fluoro also happens to be the most expensive, with maybe no stock in US - Toray Solaroam ExThread - just has all the right properties, limp, low memory, tough - and they get there with a different formulation in each size.  

2nd best is Tatsu.  

Probably can't go wrong with Invizx, especially if you see yourself buying a bulk spool.  In the salt, I fished nothing but Abrazx for a decade.  

 

If the question ever comes up what makes fluoro "invisible" in the water - fluoro transmits 100% UV, while mono absorbs enough to create a UV shadow.  

Back around 2010 Blackwater Fishing was a local supplier for Toray Solaroam FC and started using it in lieu of Shooter FC the 1st available on 100+ meter spools that I knew of in the late 90’s.

Not aware of JDM suppliers back then finally gave up on Solaroam FC when the price hit $35 for 85 meters. Seaguar came with Tatsu about that time $40 200 yard spool. 
BSF bait casting reel 6# Tatsu will fill a few times, best choice.
Tom

Daiwa Samurai FC. I've been liking Samurai for BFS lately.  It performs like sniper. I like it because I can get it with 2 day prime. Some of the other lines are harder to get through Amazon. So if I'm not making a big order through TW to get free shipping,  I'll just order Samurai from Amazon.