Regrettably, I won't be visiting Chi-town until mid-July (my wife likes to celebrate her birthday with her family), but I'm sure glad you mentioned the Duke of Perth!
I hadn't heard of that place before, but after checking out their single-malt whisky list, it's now on my must-visit list. I hope you have an enjoyable trip! 
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Happiness? I'd settle for being less annoyed!!!
"I used to be disgusted; now I try to be amused." - Declan MacManus
Member of the Clan Donnachaidh Society