I've had my DPF line on my reels now for about 4 or 5 months. and I have no complaints whatsoever regarding it's performance.
It has a very low diameter for it's given breaking strain, (I'm actually spooled up with 18lb which looks no "bulkier" than my previous 12lb Technium), it knots very well, casts well, sinks like a stone and hangs nicely from the rings.
It shows no tendency to coil. I personally love it.
But....... (there's always a "but" isn't there!)..using it has coincided with me experiencing the worst run of blanks I've ever had, Subsequently, I cannot give any constructive feedback on it's fish playing qualities.
I'm not blaming the line, as I have been fishing notoriously difficult waters since switching over to it.
The only "easier" water I have fished since spooling up with it it saw me bank a small common within an hour of arriving but then the lake was invaded by a horde of idiots which saw me packing up and coming home. Had I stayed and fished I have no doubts that I would have caught more, but I couldn't be bothered.
I have noticed I have experienced more "liners" with it than my previous line, whether this is down to the fact that it is reported to be more difficult to see under water and the fish are just bumping into it rather than avoiding it I don't know. That's getting too technical for me, but it has been significant enough to be noticeable.
At least if I'm getting liners I know the fish are out there though.....somewhere (other than around my bait lol!).
Rob