How does iphone 5 perform on ios 8.1?

So I have an iphone 5, and for now it is still on ios 7.1.2. I've been thinking about installing ios 8 on it, there are some cool new features that I would like to have, but at the same time their not necessary for me. I want to know if ios 8 will slow down my device. If you have an iPhone 5, or a 5c (they have the same A6 processor) please tell me about ios 8.1 on the device. I don't mind staying on ios 7. I don't want to lose the great performance that I have on ios 7.1.2.

I have an iPhone 5 right now and I did update it to IOS8 and it works perfectly! I believe that it is stable and consistent. I speak very highly of it and suggest that you update soon!