THE best cigar I've found that goes with Evan Williams Single Barrel
is the Punch Gran Puro Pico Bonito.
Normally, I'm a Makers Mark kind of guy ("Mothers Milk"). Lots of smokes pair very well with it - Padron 2000, Perdomo Reserve Cabinet Series Cameroon, Perdomo Lot 826 Slow-Aged, Maria Mancini Magic Mountain, Gurkha Fuerte, Don Pepin Garcia Black Label (Cuban Classic), the list goes on....
Oh, and while it probably doesn't even need to be said, I'll say it:
The ONLY way to truly enjoy a bourbon is neat or with a couple of ice cubes.
If you have to mix it, it probably isn't worth drinking.