You can try this site:
http://www.whisky.com/
Also, you will find that single malt scotch from different regions taste totally unlike others. I prefer Islay malts, because of their "peaty" smoky taste. Others dislike that flavor, but prefer lighter, fruity tastes of other region's scotch.
For my tastes, Johnnie Walker is a good scotch whisky, but the Red Label is the lowest of the brand. Black Label or Blue Label are excellent, but pricier. YMMV
Enjoy!
Charlie