Another way to go is younger members of the same family. Benchmark is a good bet if you like Buffalo Trace. It seems a bit less complex and has more bite, but the family resemblance is there.
The reasonably priced 1.75 liter bottles in my cabinet are Evan Williams and Very Old Barton.
Ancient Ancient Age is reasonably priced, but in Ohio we can only get 10 Star not 10 Year.