Hi folks. So I have purchased an iPhone SE (new on sale from Amazon) for use on my postpaid ATT account while traveling and running. I have an iPhone X but do not want to take it on trips to places where it may be of interest to others and I really do love the size of the SE while running. It came pre installed with 10.3.3 so it is one that is newish stock. Big question is do I upgrade to 11.3 or keep it at 10.3.3? Battery life and general usability are the key concerns. I do have a few silly legacy games that do not run on iOS 11 that would be nice to keep (I do have an iPad Mini 4 still on 10.3.3, so thats not the biggest deal), but I want the best bag for my buck on this little guy! Also, can I downgrade to 10.3.3 if I do not like the experience? I think I read apple stopped signing 10.3.3 for all devices but the 6 or 6s. Can i save the SHSH blobs and downgrade from there if I did take the plunge? Thoughts and opinions are welcomed. I have read a decent amount of the forums on the 10/11 debate on the SE and I do think it will run ok especially if I wipe the device and set it up as new....I hope!?!