The two single malts on your list are the Glenfiddich and Isle of Jura, but as long as you're mixing it with cola, it really doesn't matter. There's nothing wrong with doing that if that's what you like, but I don't think it's possible to figure out which single malts you might enjoy without comparing them neat and/or with a bit of water. JMHO.
You might take a look at the thread titled "Old Noob". It's more or less a blog, journaling my own recent introduction to the fascinating world of single malts. I have already found some favorites - some of them not very far above your stated budget. Good whisky isn't cheap.
So many malts, so little time...
Last edited by David_T; 05-22-2013 at 01:06 AM.