Old Forester 80/86 proof
Gary told me (via chat I believe) that it's only released occasionally.
In 2006 Market Square Liquors in Tallahassee was selling it at closeout for $20, the same as the 12yo. I bought one and tried it side-by-side with the 12yo. It's definitely better than the latter, so I bought two more.
Deep amber color, with caramel, nut and cigar-box aromas. A complex blend of toffee, caramel corn, oak and honey, with a nice tang from the rye. Finishes much smoother than the 12 year old.
Here's a pic.
The bottles were packaged in funky metal boxes with pictures of Canadian wildlife. I acquired the full set - The Moose, The Bear and, my favorite, The Beaver. Right now I'm pretty sure The Moose is in the garage, holding nuts, bolts, etc. The Bear is in my closet, holding pistol ammo. My wife stashes cookies in The Beaver, which I'm still trying to find.
As for what you have - I've never seen the 20yo.
ADDED VIA EDIT:
I should mention that this is my last bottle. I'm trying to go easy on it, which is all the more challenging in that my wife likes it too.
Back on Christmas Eve 2005 I did a review of this. Take that under consideration if you want to read it here.
Indeed Scott the CC 15 is only intermittently available, and not currently in Ontario. It is an excellent expression of the CC family, as was the 20 (also not seen here for some time but available I think at some Duty Free).
Your taste notes are very good.
With regard to adding Bulleit, it's an interesting idea. It might work with much less Bulleit added, however my inclination would be to add a straight rye or bourbon of an age closer to the age of CC 15.
Something toasty and full but round flavored might work, say, Sazerac rye 18 years old. I'd add just a little (maybe only 10% to start with and go from there).
To CC 10 the EW 1998 or 1997 would be perfect. To the CC 6 (i.e., regular CC) a touch of Rittenhouse BIB or Templeton might be perfect.