Looking at http://www.royalmilewhiskies.com/
you get the lovely Glenfiddich15 Year Old Solera Reserve for £36 or the 18yo Ancient Reserve for £43.
Not being an expert myself I know that some of the more esteemed members here like 'em too. Personally I believe the Solera and Ancient Reserve are not only head and shoulders above the 12yo, they are both great whiskies in their price range and should give you a good balance between peat and sherry (as per your post above about the Balvenie DB).
Another distillery that comes to mind is Glenlivet. The 12 is £28, the 15 £31 and the 18 £36 and at those prices I go for the 18.
Then you have Springbank 10 (£33), a little less peaty than the Talisker but with a unique profile with coconut and tropical fruits and just faint but well integrated smoke/peat.
Still the most obvious is to look for another Glenmorangie (me personally
love the Nadurra with I'd guess half the amount of water and no ice). The Lasanta is £35, 12 Year Old Quinta Ruban £41, and if you have a sweet tooth you could go for the Nectar D'Or £43. Now I'd like to say that I've never had the Lasanta or Quinta. So your milage may vary.
That's my two Ã¶re, and I hope this helps.