Ok this may be a fatuous poll but being a noob here I can ask this stuff! I may be showing my total ignorance but so be it. I have a choice (via WIN PC) to upload 4.2.1 IPSW either via current release Snowbreeze or greenpoison. The questions is: is there a better one? I just want (in this order) Reliability then performance The ability to locally back up all my data and IOS without itunes would be wonderful. Your thoughts?