Problem is you're matching 2 different reds from 2 different manufacturers. Unless red is your favorite color and that's why you want a red helmet too... I like A's design better, I like B's coloring better.
Are you Asian? I had a Shoei and the head shape was bad bad bad. I had a big pressure on my forehead after wearing one. I would get the Arai Quantum 2. It has the round oval fit that I and most americans need (non-asian)
Cool F4i by the way. I liked that period before the 600RR when the fastest 600 they made was also comfortable. Do you know what year they stopped that? I know the F4i came out in 2001.
I chose B. I mean, they're both going to make you look like a Power Ranger, but A is going to make you look MORE like a power ranger. Unless that's your plan, and then I'd go with A.
The first one is sick! But the second one has more of a n angular design that matches better with your bike.
that's a nice lookin f4i, and i'm feelin helmet b to match it. ride safe man, keep that rubber side down!