Jameson is my go to whisky. I have tried them all except for the rarest reserve which sells for around $250 here, a little out of my price range at the time being.
The 18 yr is very good, very smooth and so is the 12 yr. The Gold Reserve is also very good. However for normal days, after work I stick to the normal Jameson as I save the 18 and 12 for more special occasions.
Jameson is all around a good drink, neat or on the rocks.