Lucairo,
I've had wind knots using all of these lines (in all the pound class listed):
Power Pro (20lb, 30lb, 50lb, 65lb, 80lb braid)
Sufix 832 (30lb, 40lb, 50lb, 65lb braid)
Power Pro Ice (8lb braid)
Sufix Performance (30lb, 40lb, 50lb, 65lb braid)
Sufix Ice (6lb, 10lb braid)
Spiderwire (30lb braid)
Berkley Fireline (8lb fused)
Berkley Micro Ice (8lb fused)
Spiderwire (8lb, 15lb mono)
Trilene XL (2lb, 4lb, 6lb, 8lb, 10lb mono)
Trilene XT (12lb mono)
Sufix Siege (8lb mono)
Berkley Big Game (8lb, 10lb, 15lb, 20lb, 25lb, 30lb, 40lb, 60lb, 80lb, 100lb, 150lb mono)
Seaguar InvisX (8lb fluoro)
Seaguar Red Label (10lb, 20lb fluoro)
Silver Thread Excalibur (8lb, 10lb copolymer)
Berkley Ironsilk (8lb copolymer)
...and other lines that are not on the market anymore.
If you are having wind knots problem consistently, it is not the line. It is your technique. Some line may be a little more flexible and accommodate for your technique (or lack of), but it does not correct your issue in the long run.
Wind knots occurs when line is not wind tight enough onto the spool. This little bit of slack can later form loops. If there is too much slack in the line, or too many loops, these loops can tangle and pile up against your line guide when you cast, thus leading to the mess that is in your picture.
Wind knots are caused by one (or all) of several reasons:
1) You do not manually close the bail but rather turn the handle to engage the bail flipping mechanism, especially when there is slack from using surface lures, or if it is windy.
2) You manually close the bail but do not take out the slack before you reel.
3) You do not take up the slack when you work a lure. This is especially prevalent with twitchbait, walking bait, popper, lipless crankbait, yo-yo spoons...etc...basically any technique that requires to reel and twitch at the same time.
4) When it is too windy and the wind picks up line faster than you can retrieve.
5) When it is too windy and the wind blows line off your spool on the cast.
6) You fish with mono that has too much memory, or old mono line that has too much memory. The line flies off the spool on the cast and leave too many slack coils around your spool and between the reel and the tip guide, and when you reel up all the slack coil without tightening the line.
Sometimes, regardless of what you do, you will get wind knots.
For example, I'm trying to cast a 3" live pinfish, weightless, on a 40lb wind on mono leader that is 20 yards long, to a bridge pylon where I think snappers or groupers are holding. It is gust 20kt wind and I am 15 feet above the water. I cannot use anything but the 40lb mono leader because the barnacle encrusted pylon will cut my braid in the blink of an eye if a fish ever get close to it. I just have to work on my technique and keep the line tight as much as possible give the presentation. At times, I use my free hand (the one not holding the rod, to grab the line between the reel and the last guide and manually take out the slack as it occurs, then grab the line and pull it tight before I retrieve any line back onto the reel.
For example, I'm trying to pop a large popper fast across the surface, sweeping the rod tip 2 feet at a time and cranking down to catch up on the line. At the same time, there is 3 foot waves and it is blowing 15kt across your cast. Even with the thin braid, the wind can pick up the line that is not on or in the water, and all the crests and troughs of the waves further adds to the slack. In that case, after the sweep, you let the lure stop moving, give it a little more of sweep to pick up the line before you retrieve.
That's my suggestions for things that you can work on. If you still don't like what you hear, you can make your own decision based on your own judgement then.