batch script choose 1 or 2 registry setting

ECHO off
cls
:start
ECHO.
ECHO 1. Print Latency
ECHO 2. Print Performance
set choice=
set /p choice=Press 1 for Latency / Press 2 for Performance
if not '%choice%'=='' set choice=%choice:~0,1%
if '%choice%'=='1' reg add "HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl" /v "Win32PrioritySeparation" /t REG_DWORD /d "0x00000028" /f
if '%choice%'=='1' reg add "HKLM\SYSTEM\ControlSet001\Control\PriorityControl" /v "Win32PrioritySeparation" /t REG_DWORD /d "0x00000028" /f
if '%choice%'=='2' reg add "HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl" /v "Win32PrioritySeparation" /t REG_DWORD /d "0x00000016" /f
if '%choice%'=='2' reg add "HKLM\SYSTEM\ControlSet001\Control\PriorityControl" /v "Win32PrioritySeparation" /t REG_DWORD /d "0x00000016" /f
ECHO "%choice%" is not valid, try again
ECHO.
goto start
:hello
ECHO Latency
goto end
:bye
ECHO Performance
goto end
:end

PAUSE

echo.
echo 1. Latency Configuration
echo 2. Performance Configuration
echo 3. Standard Configuration
echo C. Cancel
echo.
choice /c 123C /m "Choose an option :"

if 4 EQU %ERRORLEVEL% (
   echo User chose to cancel.
) else if 3 EQU %ERRORLEVEL% (
   echo User chose option 3.
) else if 2 EQU %ERRORLEVEL% (
   echo User chose option 2.
) else if 1 EQU %ERRORLEVEL% (
   echo User chose option 1.
) else if 0 EQU %ERRORLEVEL% (
   echo User bailed out.
)

@echo off

echo.
echo 1. Latency Configuration
echo 2. Performance Configuration
echo 3. Standard Configuration
echo C. Cancel
echo.
choice /c 123C /m "Choose an option :"

if 4 EQU %ERRORLEVEL% (
   echo User chose to cancel.
) else if 3 EQU %ERRORLEVEL% (
   call :standard
) else if 2 EQU %ERRORLEVEL% (
   call :performance
) else if 1 EQU %ERRORLEVEL% (
   call :latency
) else if 0 EQU %ERRORLEVEL% (
   echo User bailed out.
)

goto :eof

:latency
echo User chose Latency option.
echo reg add ...
exit /b

:performance
echo User chose Performance option.
echo reg add ...
exit /b

:standard
echo User chose Standard option.
echo reg add ...
exit /b