Thanks for the replies everyone, it seems like the Lazer is going to be the way to go. The retention system makes it seem like it would be borderline impossible NOT to get a good fit.
otoman:That sounds about right to be, I do tend to get pressure on the front and back before the sides which would align well with the idea that my head is slightly elongated as opposed to perfectly circular.
I don't really need to worry about hair pull since I basically have none, almost shaved head here. However, the Kask does seem to have the more common retention mechanism although with the added "up and down" thing they talk about on their site.
Regardless, it seems like the Lazer is the most logical and safe choice here, when I tried one on briefly it seemed like it was almost floating over my head. The top of the helmet didn't really seem like it was touching the top of my head heavily unlike the Spec helmet I have. This combined with the fact that Glory Cycles is running the Genesis for $130 seems to make it a safe choice.
Any other opinions or suggestions are more than welcome