I am something of a Bruichladdich fan, their products are pretty good as far as I've tried them.
The "house character" of Bruichladdich is an underlying fruitiness, probably passion fruit and this is evident in all the drams I have tried, apart from the 1986 sherried bottlings.
What would I recommend?
The "Waves" as mentioned above is a very good and reasonably-priced dram, but it is quite a young dram and thus, quite different to the older and smoother 14-15 year olds.
At 7 years old, Waves still offers lots of that passion fruit, but it is a wonderfully spicy dram, very tingly on the tongue and very alive.
The Links series and also the WMD II are all 14 year olds and are excellent. If you like the "15" you are certain to enjoy these too.
There is another "special" called Rocks:
This seems to have two very different bottlings, albeit with no differentiation in name, packaging or lebelling.
When this was first introduced, it was only available in the Morrisons supermarkets in the UK. I bought three bottles on a trip to the UK and they were all a very light coppery colour.
These were also wonderful to drink - quite like the Waves.
After a while "Rocks" became available on the open market, but the whisky in the bottles was a much redder colour.
Although I haven't tried this bottling, I have heard more bad reports than good ones about it.
The PC5 is a great dram, but very strong at just over 60% and quite hard to get hold of, unless you are prepared to pay stupid money for a bottle.
I have seen people asking around 140 GBP on Ebay UK!
The initial selling price here in Germany was around 45 GBP!
The first "3D" Peat proposal is a fantastic whisky and my favourite of the 3D range so far.
I personally didn't care too much for the 3D2 - Mòine Mhòr, it just seemed lacking in something.
The 3D3 (Norrie Campbell Tribute) is another very good, very peaty whisky. It is extremely soft and gentle, but has tons of pure peat per glass. I have said that 3D1 (Peat Prop.) was my favourite 3D, this one is quite different, with more peat and much softer, but it comes a very close second to 3D1 for my palate. Although I am sure there are many who would prefer this one.
I hope this helps,