If you want to stay within the Heaven Hill realm, try the Evan Williams Single Barrel that Vince suggested. If you want to expand on the caramel, sweetness with less wood and more front palate, try the new Larceny. If you want a little more oak influence and less sweetness, try the Elijah Craig 18yr. If you want to be blown away try the Parker's Heritage Collection releases, especially the 10yr Wheated Mashbill.
Start with those, report back on what you liked and didn't like, and we'll expand beyond Heaven Hill. But remember, this is always subjective and everyone's palate is different. The only way you'll ever know what you like and don't like is by your own experiences, not the opinion of others.
Now with that disclaimer out of the way.....have fun!
"The last time I turned down a whiskey, I didn’t understand the question."
"Sometimes I drink my whiskey neat. Other times I take my tie off and leave my shirt out."