slicing for jerky

[tsquared]

A local store has bottom round on at a good price so I'm thinking of picking some up for a batch of jerky. My question is a total noob one: when you are slicing for jerky do you slice with the grain or across it. I'm guessing with but I thought I'd ask.
T2

[Tenpoint5]

For ease of chewing cut across the grain for a tougher chew cut with the grain.

[tsquared]

Thanks 10.5
T2

[GBIceman]

I spend a lot of time to get the jerky right so I want the chew to last. I perfer to cut with the grain.