Best software to jailbreak iphone 4?

I'm looking for the best software as far as speed (i do NOT want to overclock or nothing) i just want it to be stable and not laggy. I've heard redsnow or snowbreeze so far from a few web sites. Thanks in advance for answers! I will use a macbook pro to do it, and am using iOS 6.0.1 on my phone, if i need to go back to iOS 5, can i revert back to it?

I used Sn0wbreeze and it's great, Redsn0w is excellent too, I wouldn't use anything else.

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