I found their two lightest beers to both be too salty.
The 77 Lager just generally salty (like table salt), and the BrewDog Trashy Blonde to have a very pronounced metallic salty taste. (I tried to get the batch number off of my last bottle but my wife had already washed the bottle and removed the label...)
-And no, hops don't produce salty or metallic flavors.
Tokyo* was VERY good, but I can't help but thinking that I'd like it better if it was about 10-12%. (Hmm... wonder if I can still track down a bottle of "Tokyo Black"...)
Their Paradox Islay stout is my second favorite European stout and is VERY different than N0gne; they occupy two different ends of the Imperial Stout flavor spectrum so there's plenty of room for both. lol!
Punk IPA is just all around great stuff.
I've had nothing but fantastic stuff from BrewDog until I tried their two light beers, but I guess I shouldn't expect them to do every style well...
Adam