Other than absinthe, I very rarely mix. My old platoon Sergeant (R.I.P. Bill) used to say that somebody went to all the trouble of making it as it is, why should I disrespect their hard work? And I'll drink almost anything, although I'm not a fan of tequila. If I want my drink cold, I'll use some fake ice cubes, I have a number of types, because I don't like ice melting, watering down a drink, and having the last few sips taste weak.
I enjoyed the Welsh single malts that the LCBO was carrying for a while, but they no longer stock them. Right now I've got Distl rye, quite nice.