Had Bushmills 10 recently and it came across a whole lot better than I recalled. Of course it's pot-distilled; it's a single malt whiskey, after all. Not to be confused with Pure Pot Still (Green Spot, Redbreast), which is different from single malt in that unmalted barley is used in the mash bill in addition to malt. Anyway, I agree that Jameson 12 is lacklustre after Bushmills 10.
Do you guys recommend starting with Bushmills 10 or Black Bush for someone who hasn't tried Irish?