Best: Kirkland Signature American Vodka. Best: Kirkland Signature Blended Scotch Whisky. Best: Kirkland Signature Blended Canadian Whisky. Best: Kirkland Signature XO Cognac. Best: Kirkland Signature Irish Cream Liqueur. Best: Kirkland Signature French Vodka. Worst: Kirkland Signature 7-Year Small Batch Bourbon