A few years back I tried Bourbon while in Louisville. Yes, there is more often than not a burn with bourbon, but I never get a headache while drinking it. I have switched to bourbon. While Scotch always had a very earthy flavor, (to my palate) Bourbon has a sweeter flavor. That said, an ounce of Johnny Walker Blue is hard to beat.
They BOTH pale in comparison to a good Irish Whisky.
Scotch without the smoked peat.
Nectar.
I think that stuff, JWB, is about $200 at our local ABC store.