This is based on aroma, taste, and bang for your buck.
Maker's Mark
The bottle with the red wax finish that everyone seems to be able to identify. The Maker's Mark headquarters in Loretto, Ky is the oldest working distillery remaining on its original site in the US. Very reasonably priced at just under 30 bucks, this bourbon upon first smell gave off an aroma of vanilla and cocoa. One of those bourbons that, upon first sip, is smooth as hell, and tasted like spice cake.
Evan Williams Single Barrel Vintage 2003
Evan Williams, as I have found out amongst friends and bloggers, is a love it or hate it brand. I fell in love with the black label during the infancy stage of my bourbon tasting and later on, the 1783. When I shelled out the 22 bucks to buy this single barrel bourbon, I wasn't expecting much, mainly because it was only 22 bucks. I get it home and upon first sniff, I get a similar smell as I did for the other two (caramel and vanilla). Upon tasting it, I was blown away by how delicious it was. Lots of maple, cinnamon and honey going on here. So incredibly smooth and cheap, it was a no brainer to give this bourbon 5 stars.
My last 5 star bourbon (and hands down my favorite)
Elmer T. Lee
I learned something early on while I was buying these different bottles...everything Buffalo Trace makes is liquid gold! Elmer T. Lee was a former Master Distiller at Buffalo Trace, where he created the first single barrel bourbon back in the early 80's. Everything about this bourbon is phenomenal. Lots of citrus, vanilla and corn going on, with an aftertaste better than anything I've ever experienced. I can't explain what makes this my favorite out of the 50 or so I've tried. It just is. Right around 30 bucks.