I think it may be your equipment, NETcom makes Big Spirit at 25% tobacco extract so it's about as strong as you'll find for that specific tobacco. I have no idea how well an even higher ratio of tobacco extract would work.
Bill's are mixed much lighter, but I still get plenty of flavor and they're just as good. Well, the Nat Sherman isn't just as good, it's better, NS makes for a more complex vape experience than AS to me. I look forward to trying NETcom's version of NS MCD.
Thanks. Yes I'm pretty much surprised about the taste of BS too. Maybe I tainted the juice in my sample bottle. I tried it recently too, there's nothing bad in it, it's just very dilute tasting. Meanwhile, other juices from GeJ and some others from N-E-T.com are tasting good.