I just spooled one of my spinning reels with this stuff O_S.  Will give you my opinion after our trip in June.  I have the 8lb test that I tied to 6lb mono backing with a blood knot.  The knot has to be wet - very wet, or the line snaps instantly.  (I know they recommended some other knot but old habits die hard).  I'll keep you posted with my experience.

I was reading the reviews you posted PK with some interest. After the review there was some commentary which I also read. One guy mentioned a "Red Phillips" knot for connecting super lines to mono or fluorocarbon (and this may interest you OS if you decide on nanofil so listen up). Naturally being a knot guy and having never even heard of a Red Phillips knot I decided to take a peek........I am intrigued. If this knot works it would be a sweetheart and my newest girlfriend.......taking the place of a uni to uni which is fraught with all kinds of stipulations (such as doubling the super line, differing amounts of turns etc. etc.....all of which can be tough in the wind). Check it out.........

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Please share your opinion when you have one. Thanks for links.

Haven't used it but am intrigued.  I've used a couple of braid lines in the past 5 years, but always find problems so I go back to the Trilene XL. 

I did some searches for reviews and found a couple of links below....seems as though most give it good ratings, but a few hate the stuff...guess I may try some and form my own opinion....

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Has anyone here used nanofil line? It is marketed as being superior for spinning gear. Thinner diameter. Better for casting, cast farther. No stretch. I'm considering spooling a reel with it for July trip. At $20 per spool it is about 3x cost of mono. I'm looking for feedback from any who have used it. Thanks.