I thought I was set on invizx but have been seeing the seaguar flippin' fluoro. Thoughts on which is better?

I've used both.  While Invizx is a terrific all-purpose fluoro line, Flippin' fluoro is definitely designed specifically for flipping/pitching. It has terrific knot strength, and is incredibly abrasion resistant.  Seriously, I've tossed it into some pretty thick cover, woody bushes, etc. and was surprised at how well it came through unscathed.  I didn't have to retie as much as I normally do with non-braid line. 

That said, it's not a casting line.  It's not as supple as Invizx.  That's why it's so strong.  But....you're not casting it either.  This is designed specifically for flipping/pitching. So that shouldn't be a problem.

I was thinking it is probably more like a Fluoro leader which is stiffer and more abrasion resistant imo than just using a regular spool of flurocarbon...I use Seaguar Leader for most of my fishing, and have always felt like Seaguar line was the best value overall since it is one of the only brands for me that rarely fails and when it does, usually it was a rushed knot or something I did wrong...

The lines today are getting so much better...I was anti Fluorocarbon 2-3 years ago and had nothing but issues with it, now I don't know how I ever got by without it...I love the fact that 20lb Seaguar Fluoro has the dia of 17lb test, and also how good it is for fishing shorelines and you almost never have to retie....I want to try this line, I like using Fluoro for fishing certain weeds better than Braid and also wood for most part since it rarely gets snagged or frayed and is quiet...Some Weeds with stalks, if you are using braid, I am convinced the fish can hear that rubbing that is great for landing fish, but I am convinced I get more strikes with 25lb test than 65lb braid buy I know that is subjective and personal confidence...

My point is that Seaguar seems to be ahead of the curve when it comes to designing Fluorocarbon, I know other brands are also really good, but for some reason Seaguar is what all the saltwater guys buy and they are fishing more rough areas than we are for most part...I woud not hesitate to buy it since you know it will last forever, only spool about 30-50 yards on top of your braid for punching, flipping, and close combat...That is why paying more for line makes sense....