Should I upgrade to iOS 7 or not I'm using iPhone 4S?

So I upgrade my iPhone 4S from iOS 5 to iOS 6 and my battery couldn't last long and have countable crash/freeze screen
And my iPhone become somewhat slow so if I upgrade to iOS 7 will these problem disappear or not and what are the risk and advantage from upgrading iPhone 4S to iOS 7 thank you.

Upgrade to iOS 7, It's awesome…

Dude trust me you would love the interface its awesome, lot better than previous ios version.
IOS 7 has some good features that we were missing in IOS 6 or earlier versions.
I'm also using iphone 4s yea i too noticed some battery issues but still its worth the expense.

I upgraded my iPhone 5 to iOS 7 and it's awesome, no problems and it's actually faster than before. I use to have the same problem with iOS 6 but iOS 7 is way better, well I personally think it's better. My charge is great, doesn't run out fast. It's got more features. I thought I'd hate iOS 7 but I'm actually loving it more than the rest of the iOS softwares I've experienced

Last week I upgread iPhone 5 to iOS 7 and it's awesome, no problems and it's actually faster than before. Actually its depends on you, at 1st see iOS 7 features then decide