I have been using Icon for quite a while now. Started out with Astars, and Joe Rocket, then finally tried Icon back in 2006 maybe. I had a textile for my last bike, and it has held up great. Really easy to clean by throwing it in the washer. When I got my FZ, I wanted more protection, so I went all out and bought a Overlord Prime Jacket. I love the thing. I feel VERY protected in it. It has exterior armor and the usual interior armor. It is Icons attack fit, so the arms arm bent formed. The only thing that is awkward about it is when I park the bike at my shop and drive home in the pickup while wearing the jacket, feels odd sitting in a cager seat. The jacket comes with a liner, and it keeps me warm with just a t-shirt underneath down to 50 degrees. If it's colder, I wear a long sleeve or thermals. It flows air VERY well, but not too much.
Needless to say, my riding buddy liked the look of my jacket, and bought the same one in a different color. He came from a Astars leather jacket and likes the Icon better. I have since bought my fiance a Icon Hella 2 jacket since she is on the back on a regular basis now. Side note, I also got her a Airmada Chantilly helmet and Sidi boots, so I know she is well protected. I just got some Sidi boots as well, but I am not sold on them yet, although they offer better protection, and better bike feel. I have two Icon helmets myself. I love the looks. They are well built, and just as good material wise as most anything out there. Are there better helmets? Sure. But not in my budget.
It's all personal preference. Icon fits my style. I am not opposed to Astars or Rocket stuff, I just find it boring. Why pay that much for gear, and not be able to look good as well? I know I am protected as much as I can be short of wearing a Dainese suit (which I plan on purchasing in the future), so that is all I can ask for.