Bringing this full circle to page one, I've got a bottle of JTS Brown Bonded. It's nice. Similar to Old Grandad Bonded. This is a Heaven Hill product and its solid. 100 proof. Not hot. Not spicy. Some vanilla.
The buyer at my local Binny's recommended it as he's high on bonded whiskey and anything overproof. It's a solid recommendation.
Also, I haven't tried the rittenhouse bonded, but the old overholt bonded is pretty good.