Hypertension: A 'Killer' Sudoku with New Twists

Today's Puzzle:

An exceptionally smooth puzzle with twists on both killer cages and little killer clues that flows once you get started!

Link to Play Along:

Hypertension by Michael Lefkowitz http://tinyurl.com/SudokuSleuthHypertension

Rules:

Normal sudoku rules apply.

SILENT KILLER Digits in a cage sum to the number in the cell pointed at by the cage's northwest corner. Digits cannot repeat in a cage. Example: row 1 column 2 shows the sum of the upper-leftmost cage.

SILENT LITTLE KILLER A cell with an arrow shows the sum of the digits on the arrow's diagonal.