Great suggestions all around. This would be my suggested shopping list:

Evan Williams Single Barrel 1994 - Gingery and silky
Wild Turkey Russell's Reserve - Heavy and rich
W.L. Weller 12 Year - Wheat recipe like Maker's Mark, but far better. I get lots of creamy chocolate from this one.
Van Winkle - Whatever you can find in California. The 15 year is particularly well liked. Another wheat family, but among the finest.

I personally like the Woodford Reserve. I tried it starting with batch 121, and it's excellent.

Honestly, though, you might want to try a straight rye if you're interested in contrast. The Wild Turkey Rye is good and fairly commonly available. I recently had the Van Winkle Family Reserve Rye for the first time, and it's one of the finest American whiskies I've had yet.