I have the outlyne one and LOVE IT! I HIGHLY recommend it, even though it is pricey. Everyone seems to love charles owen and rodney powell but I've tried both of those and HATED them. They are just so bulky and uncomfortable. The aerowear outlyne forms to your body better than the others and is very comfortable. Nothing like a tipperary of course but after a few minutes I barely noticed I was wearing it. All other vests i've tried felt like turtle shells.
I dislike any vest that is not certified nor approved. I'd wrather have a "bulky" vest that has the stamps of approval on it, knowing that I'll be as best protected incase of a fall - than a vest that isnt bulky, and has not passed the tests to ensure my body's safety.