Indeed. Somehow, I prefer the regular Buffalo Trace to Eagle Rare 10. To me, it seems to have a drier, rye bite that I like. Eagle Rare 10 is very good, but perhaps even a bit too smooth for my tastes. FWIW, sale prices around here are about $16 and $21 for BT and ER10, respectively.
As for Evan Williams Single Barrel 10 y.o., its vintage year somehow makes a distinct difference in taste. The heralded 2000 vintage (bottled and sold in 2010) was extremely well balanced, if a bit sweet for my tastes. It was a tremendous bargain at the local sale price of ~$17. The 2001 was a slight step down and the 2002 has simply far too much wood char flavor for my palate.
Overall, for the money (and my palate), Buffalo Trace is my go-to KSBW. It ain't a fancy package, but it is a rock solid whisk(e)y.