Thanks for your opinions guys!
Peergynt, I think you are right in saying that it is underrated because it tastes so good...it IS purely a pleasure dram - it makes you go mmmmmm and while being peaty, it is unbelievably drinkable.
In the words of the Chillies, I guess many Laphroaig nuts and peat freaks like their pleasure spiked with pain i.e. C/S - Which I like too, but only when I'm in the mood, after a few drams of other malts.
Nock, I agree with you in that the 15 might be even better if it was bottled at say 46-48%
ScotchPalate, I don't have tasting notes for you - but I can say that the 15 is less medicinal than the 10, while still retaining a big hit of (smoother) peat. The 15 has a delicious slightly nutty malt taste that you don't seem to get in the 10. Overall I think the wood, malt and peat are better integrated in the 15, it is definately smoother and yummy but you won't be missing out on peat! You really should get a bottle, or at least try a dram, you won't be dissapointed. Don't add any water.