Sprint S4 with Jellybean ready to try a custom Rom (Newbie)

[jp0213x]

I've had my sprint s4 for two years now, I am looking for a rom that will breath new life into the phone. I am still using the stock jelly bean rom and I am looking to switch over to a custom rom. Does anyone know which rom out here is stable enough to try on my s4?

 

[RogMoore]

Why you are still on the jellybean? You could move on to Kitkat or Lollipop.

 

[jp0213x]

Yea I know, when I first got the phone I did some kind of firmware update which resulted in me getting another s4. Since then I have disabled updates to the phone. I think I want to use a custom rom, but I want to know what are the stable roms.