Without going into specific bottles if you are particularly interested in cask strength whiskies it might be worth your while looking at an SMWS membership, all their releases are cask strength. Other independent bottlers like Signatory Vintage, Cadenheads and Gordon & MacPhail will probably be your best bet, outwith SMWS, for getting age statement cask strength bottles. While you can get original bottling CS versions they tend not to be particularly old, and are also usually snapped up by flippers to stick on the auction houses for a quick profit. It's genuinely silly what some people are willing to pay just to say they have a bottle, when the whisky isn't anywhere near good enough to warrant what they are paying. I'm talking about things like Springbank and Kilkerran here where they are good at the RRP, but not for the inflated prices on auctions.
And with regards Macallan, you can safely ignore that as far as it goes as an indicator of general pricing. It isn't really aimed at the UK market, the bulk of stock gets exported to the US and Asia, so while it is expensive everywhere it is particularly so here. They are also catering to the speculator market, so they expect that much of what they put out will go into collections and auction houses. When the whisky isn't expected to be drunk there really isn't much incentive for them to put great whisky in the bottles. That's not to say it will be bad but, again, it is almost certainly not worth what you would be paying for it.
As for investment in whisky, I suspect now isn't a great time for it, you can probably make some quick cash on the types of things I mentioned, but longer term investments in what is coming out just now probably won't work. as I dount they will hold their value, whisky prices are pretty close to the peak of what the market can sustain. But that's just my opinion.
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at least of those that are bottles I can nonchalantly open and drink 