I think the octal has too many HUGE vents. they look squared off and seem as if it would add drag.

the octal aero has virtually no vents.

Both are pretty ugly but thats just my opinion.

193 grams is nice but $270- $300 usd!! no thanks

I use a bell furio it was $45 and it weighs 260 grams which is not heavy and I think looks better.