I don't know if I could ever pick a favorite scotch, but I will say I got a bottle of Laphroaig Cask Strength a few month back and it is fantastic. It's a nice peaty aroma and taste, but it is probably the smoothest stuff I've ever had. Best part of it being cask strength, watering it down only makes it better. Also, I'm a big fan of GlenDronach 15. It's a unique single malt. I believe it is one of the only scotchs still being made in the ultra-traditional method. The distillery has their own malting floors and they still fire the stills with coal. It's a really well balanced drink.
But, I would say I mostly drink a Pinch 15 yr. old (Dimple for our friends across the pond), its a solid blend and I've never met a tobacco it didn't compliment. It has one drawback though, IMO it really looses something when watered down, so no fun with ice (a bummer for me in the summer). However, its good and inexpensive (for scotch).
Also, I frequent a pretty good burbon, that I only drink cause it reminds me of a mellow scotch, called Labrot & Graham Woodford Reserve Distiller’s Select (about $30 a bottle). It's a really nice drink neat, perfect for a digestif.