The bottles you decided to try are good choices. Most here would consider them superior, yet they are moderately priced. You could even go a little cheaper on the Beam and substitute Jim Beam black label for the Knob Creek.
As others have cautioned you, though, don't expect that just because you like one bottling from a particular distillery you will like others. It's amazing how much variation a distillery can get, even if they only make one mashbill.
Probably the best thing you can do is take advantage of the vast tasting experience of the people on this board. If you find something you like, post something like this, "I tried Old Washboard 6-year-old, 93 proof and really liked it. Can you recommend anything similar?"
No guarantees, of course. As someone here used to say, "your mileage may vary," but that may be a better way to reach your objective than to find something you like and then randomly try other products of that distillery.