I'm probably opening pandora's box here, but what am I missing out on? I'm pretty happy with Apples setup and there are millions of apps to choose from. I would like to delete some useless ones, but I just move them to the back page and never have to look at them.
Additional apps that are banned from the apple store that give you more control and functionality. For me, one of my favorites is morse code, can type using just two buttons if you know code.
Another good one, Pdf printer for safari, can print any document to pdf from any application without ads or fees (buggy in 7 right now though).
Swipe to kill, one swipe kills all running apps instead of going thru one by one.
Ccsettings - control the control center available toggles. Many of stock that i think r useless and are now completely hidden.
wifi passwords- shows password for all secured systems you've connected to should you need the password to get another device connected.
Many others, most are free. Above are just a few that i have used and appreciate.
Yes, it does void the warranty, but one thing you do while on tech support calls is restore the device to see if that corrects it. This will remove the jailbreak and the warranty is again valid.
Not for everyone, but i recommend evasi0n over all other available jailbreaks.