I would sell it and use the proceeds for the s5. Now you never upgraded past MDL, correct? If so it means your device has more options becuase the buyer can loki, and use more roms than those who upgraded and have to run Safestrap roms.
That could get you a few extra bucks.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Inspire 4g 6/2011 - 5/2011 R.I.P
S4 - Rooted MK2, MDL Firmware
Nexus 7 Stock Rooted