This type of question is highly subjective. However, you may be wondering how Tullamore Dew measures up to the best selling Irish whiskey in the United States. Both are surprisingly smooth for the price, and they both ring up at the register about the same. Jameson’s flavor profile is robust while Tullamore Dew is sweeter and softer. Jameson has a hint of spice, while Tullamore Dew is buttery and silky. Jameson pairs well with ginger ale while Tullamore Dew is better mixed with fruitier cocktails or in a glass, neat.