I tend to drink a Speyside as an everyday drink, a Highland occasionally, and an Island with certain foods.
In terms of everyday drinking, I'm a big fan of Cardhu, the Diageo one that caused all the stir when they labelled the blended one as a "pure malt". The single malt Cardhu is really smooth and very easy drinking.
I don't really rate Irish whiskeys, but I suppose this is through lack of exposure.
Some Scottish blends I just can't drink as they're disgusting, however my mum always seems to get me a miniature Antiquary every year at Christmas and it's lovely.