This is a topic that has been at the center of discussion for years at every Scottish dinner that I have ever attended - I have sat in front of big open fires all over the highlands over the years bashing this one out.
There is no right or wrong - its your personal choice.
But if I was to only drink one whiskey for the rest of my life it would have to be Balvenie 12 year old Doublewood - it goes down the throat like the Devil in velvet trousers.
www.balvenie.com
You cant go wrong with any of their products.
And on the subject of gin - there is only one option for me - being a colossal gin drinker - Hendricks Gin - made in Scotland - it is a cucumber based gin - serve it with Schweppes (the ONLY tonic that belongs anywhere near gin) with a slice of cucumber - not lemon.
Try it and get back to me - if you drink gin and have never drunk Hendricks then you are in for a treat.