i am also using flouro but let's get some things straight.it has as much or more stretch than mono.tests have proven it.it is not invisible in all circumstances.it is less visisble than most mono.it is not stronger than a good mono and once stretched to it's max it does not recover where as mono does.tests have proven this also.it is abrasion resistant and much more sensitve than mono due to increased density which is why it sinks.
I was just stating my opinion based on use of both types. I would really like to know what mono this is you're comparing to fluorocarbon and what # it was, cause I've never seen these characteristics myself. Mono from my experience is more prone to breaks, stretch stress (although every time I've seen mono stretched to it's 'max' it was followed by a snap), and memory problems. I use P-Line Halo fluoro exclusively, I have not seen any stretch problems, and it seems pretty darn invisible. I'm basing this off of use, nothing more. I don't mean to argue, I'm really just curious what mono and fluoro these tests were done with. Maybe I had been using some really crappy mono. >
go to tackle tour.com and check out there tests.there are also other tests if you google search.i still prefer the flouro because it's more sensative than mono but it does have it's drawbacks and weaknesses.