well, there is the day to day drinkin' by myself after the kids go to sleep stuff, either lone star tall boys, or whatever bourbon is cheapest at the store that day. I don't believe in mixing "good" bourbon with soda, so I tend to get a half gallon of whatever is cheap, usually JTS Brown or Kentucky pride. But only true "bourbon" not "whiskey" or "blended whiskey". By law if it says "Bourbon" on the bottle it must be aged at least 4 years, in new oak cooperage, and meet other content specifications that pretty much mean that it's all good enough to be indistinguishable mixed with coke, or anything else.
Then there is the good "having company over for a drink after dinner" stuff. I always have at least a bottle of single malt scotch and another bottle of small batch bourbon on hand to drink straight, or at most with a splash of room temp bottled water, distilled only, not spring water. Right now I'm working on a bottle of Dalwhinnie single malt, which is made in the Highest elevation distillery in the Home Country, and just cracked open a fifth of Elmer T. Lee's namesake single barrel bourbon. I very seldom repeat buy a premium spirit, so many bottles, so little time! I've also never found any so bad I've had to throw it out either.