What do you want a fixed focal length for?
Think very carefully what you will use it for.
Yes... any prime will give you a better IQ, faster lens, good in low light, good bokeh, etc..
However it's one focal length only.
Look at the library of pictures you have taken so far.
What focal length were most taken at?
If you only had a few at 50mm, you don't need a 50mm prime.
Use you kit lens at 50mm for a few weeks (not just a day) and see how you cope.
Or use it at 35mm, 85mm etc..
If you get frustrated at not being able to "zoom" then primes are not for you.
I mainly use an EF 28 IS USM on my 60D.
Because it's just under the 50mm equivalent on FF (28mm is equivalennt to about 45mm).
I used to have a film camera with a 50mm lens for years & years, so I'm so used to looking through the viewfinder and seeing that 50mm view.
If I'd bought a 50mm for my 60D it would be no use to me... 50mm on a crop camera is too telephoto. It's like having an 80mm lens on a full frame camera.