For no good reason, I decided to sip a little Old Grand Dad BIB side by side with Wild Turkey Rare Breed. These are two excellent whiskies in my judgement. See my reviews for a more in depth assessment of each.
The Old Grand Dad has a nice corn sweetness upfront that is followed by a slice of spice that seems to parry the sweetness very well. The oaky aroma in the nose barely makes it into the taste so the finish is more on the sweet side than the dry side. The peppery spice and alcohol, do however, battle the sweentess to a draw. A fine bourbon indeed.
Twixt you and me, if I went to someone's home and they claimed to love bourbon and didn't have some OGD in their bar, I would be suspicious.
Rare Breed is a bit higher in proof - 108.6 vs 100 for OGD BIB - and has a more complex nose and taste. In addition to the oak being more prominent in the armoma and on the palate, I find the RB to be a bit creamier and thicker.
Twixt you and me, if I went to someone's home and they claimed to love bourbon and didn't have some RB in their bar, I would be even more suspicious.
I would choose RB over OGD most of the time (although you will always find OGD in my bar), but if someone were to take OGD over RB I would not argue with them, they could make a strong case.