ISSA - International Slalom Skateboarding Association

i want to get a pair of 80a cults but not sure if gamma ray or death ray are the ones to get for back truck? orange=death ray/blue=gamma ray
(i have zillas & dominators but i want an 80 duro pair for those times i skate crap surfaces for long periods)

also, whilst i'm here, can someone tell me why it's so rare to see people use pps cone crushers as a front wheel?
it seems they're sold as a dedicated back wheel & i've always wondered why such an awesome wheel doesn't have a front wheel to compliment it's look,shape & feel.

I tried both the deathray looks more responsive and faster but the Gammaray looks more grippy
that's depends what you like.. this is my personnal feeling after few test (without timer)

thx for that...i think i'll grab the gamma-ray first & see how it goes.