This is a common question that is always asked on Scotch Whisky forums. Mine change often and I generally limit my choices to readily available Scotch Whiskies as it is annoying to here some one wax poetically about some whiskie that has not been available for years, or costs more than a mortgage payment. That being said, mine are.
Any Springbank,
Caol ila 12
Aberlour Abundh
Any Highland Park
Ardbeg Uigeadail
And for a daily dram, Glenmorangie 10, oops thats 6, oh well, hard to limit it to 5
JW