Sorry about the repeat. But I guess I kinda want to stress that I've fallen in love with Longrow...
That's ok Reggaeblues, it is indeed worth mentioning twice, Longrow CV is a terrific bottle! Not as heavily peated as any of the above-mentioned Islay heavyweights, but it's under 30GBP and delicious! I would love to try that Longrow 18 everyone's hyped up.
If you are looking to save $$$ and trying to get away from Islay, I would go with the Ardmore Traditional Cask. It's smoky enough and you can find it for just over 20GBP. Ledaig also makes a peated version called (you guessed it) Ledaig Peated, and it's dead cheap at 15 quid!! I haven't tried it, but at that price anything is worth a go.
Good luck and let us know what you go with and how you like them!