I switched to all Seagar Red Label this past year because i bought it during the Tackle Warehouse sale last year. I had absolutely positively 0 failures. I do like InvisX better, but for half the price Ill stick with Red Label.
Here's my dumbed down flouro line choices (i can get too technical for my own good, they're just fish right?!):
10lb shakeys and some cranking
12lb for most situations
15lb around grass
20lb flippin and pitchin