Just curious. It can be something you've tried and cannot stand. It could be that you have a grudge against a distillery or third party supplier , heard bad things about a certain bourbon, etc.
For me, there are quite a few.
Here's my list:
Pure Kentucky XO
Any Evan Williams Single Barrel
Woodford Reserve, et al.
Ridgemont Reserve 1782
Any bourbon that has "Reserve" in the title"
How about yourself?