I say...rid yourself of frustration...and take a plunge. Flash a custom ROM...to get the MOST out of your device.
There are plenty "basic" 6.1 ROM's out there that are stable. Some even retain the look and feel of the stock Sprint ROM.
Can't beat the better battery life...major improvement on the heat issue...and general responsiveness of the phone.
You can also improve on battery life, heat, and signal strength...
