Help with SQL Case statement

This was working fine until I needed to add an additional CASE @Level statement. I need to run a different select statement based on the level number passed to it. Thanks

CREATE PROCEDURE p_CashSample2
@Level Int = NULL,
@RecordCount Int = NULL OUTPUT
AS
SELECT @RecordCount = COUNT(*)
FROM PopulationBondsCash_Temp

CASE @Level
WHEN 1 THEN
-- *** Level 1 ***
SELECT TOP (CASE WHEN @RecordCount BETWEEN 2 AND 8 THEN 2
WHEN @RecordCount BETWEEN 9 AND 15 THEN 2
ELSE 125
END)
*
FROM PopulationBondsCash_Temp
ORDER BY NEWID()

WHEN 2 THEN

-- *** Level 2 ***
SELECT TOP (CASE WHEN @RecordCount BETWEEN 2 AND 8 THEN 2
WHEN @RecordCount BETWEEN 9 AND 15 THEN 3
ELSE 1250
END)
*
FROM PopulationBondsCash_Temp
ORDER BY NEWID()

WHEN 3 THEN
-- *** Level 3 ***
SELECT TOP (CASE WHEN @RecordCount BETWEEN 2 AND 8 THEN 3
WHEN @RecordCount BETWEEN 9 AND 15 THEN 5
ELSE 2000
END)
*
FROM PopulationBondsCash_Temp
ORDER BY NEWID()

END