Loc: Lake Jackson, TX
I've had great luck with the Seaguar fluorocarbon. Ive used both the red label and the Invisx. Take your time with your knots. I suggest you tie them slowly and make sure they are lubricated. Tying knots in fluoro is less forgiving than mono. Lots of people use different knots but for me I used the improved Albright knot to tie the fluoro leader to braid and I use a trilene knot to attach the fluoro to my hook/bait/swivel.
I've tried almost every brand of fluoro out there. Pretty much buying what's available and have not had a bad one. I mostly use Seaguar but also have Stren and some unpronounceable japanese brands in my bags.
_________________________ www.cudakilla.com "The best fisherman I know try not to make the same mistakes over and over again; instead they strive to make new and interesting mistakes and to remember what they learned from them." John Gierach