My favorite is Highland Park 18 year old but have tried at least once almost every Scotch listed here.
I have one bit of advice. Cheap whiskey, cheap women, and cheap cars are never a bargain. Save a bit and buy top shelf Scotches. Savor them, using a just a drop, if any water - just enough to release the bouquet.
I've found that a bottle of good single malt, taken a finger or two at a time, outlasts the blended Scotches, which some of us tend to quaff.
On average, I would argue that single malts are better than the average blended Scotch.
But that isn't to say that all blended Scotches are inferior. I love the $80 Buchanon 18 year old, and Wine and Spirits rated it dead even with their $2500 top pick blend.
Aside from the delicious but overpriced Johny Walker Blue, you might give a go with Johnny Walker Double Black, which includes Talisker and Caol Ila in the blend and comes in around $45 bucks a bottle. Usquaebach Rare is another hearty whisky that goes for about a buck and a quarter but you can find many fine blends from about $40 to $80 including my longtime mistress Pinch, as well as AD Rattray Cask Islay, Islay Mist 17 Year Old. Age makes a world of difference. Chivas 18 year old is almost a different whisky than the 12.
Pax