What is better? The Iphone 5 or 4s?

I'm getting a new phone next week and am considering an iphone. Which one is better the 5 or 4s? The cost doesn't matter and i have heard about the glitches on the 5… Are those true?

My sister has the 5 and she doesn't complain. I would get the 5.

I've heard the 5 has many technical problems and people are moving back to the 4s because of it

I have had both the iPhone 4S and the I currently have the iPhone 5. Here are some tips you might like to know…
iPhone 5:
-A6 processor, (better gaming graphics and smoother running iPhone)
-4 inch retina display (iPhone 4s has 3.5 inch so it's noticeably larger)
-720p front facing camera (very high quality! Trust me, it's pretty awesome)
-The iPhone 5 has an aluminum backing, making it much lighter than glass.
-The iPhone 5 is very slim. Very thin, and very light. Very noticeable!
-Saphire crystal lens for back camera. (Makes it very hard to scratch it, or do any damage to it.)

iPhone 4S:
-All glass, less stronger and spider webs easier.
-A5 processor, good graphics, but yet less better than the iPhone 5.
-Smaller screen, 3.5 inches. Noticeable smaller than iPhone 5
-Not Saphire lens. Easily scratch able.

Both in common:
-Siri: your virtual assistant.
-HD screen.

All in all, iPhone is noticeably better. I love my iPhone 5. Way better than iPhone 4S. I would go with the iPhone 5 personally. I noticed that I love it so much better. If you watch YouTube videos on iPhone 4S and 5 comparisons, you will like the iPhone 5 better.