Best chance of getting root - Stick with OF1 or take the update to OG5?

Basically I decided it was time to root about 2 days after I took the update to OF1 and was very frustrated to realize that I had basically shot myself in the foot. With the new update being available now, I'm left debating what the best course of action is. Should I take the new update with whatever features / additional security that it implements in the hope that there is an exploit in it, or should I stick with the current locked down version in the hopes that an exploit will be found.

Advice would be appreciated from someone with more understanding than me...