i don't get juice in my mouth, but sometimes I get a little condensation, I don't actually mind it. it's like little pin ......, it's not an unpleasant feeling. but I guess not everyone would like it. it doesn't always taste the greatest though, but it's such a small amount. If it builds up, you just blot the mouth piece on a tissue, and there are two air holes, sometime they get a little moisture in them, I just blow through them, or blow into the mouth piece without pressing the button.
and re the smokes, there are lots of chemicals in tobacco smoke, and nicotine isn't the only addictive one. also, when you inhale a smoke, it takes 8 seconds for the nicotine to hit the brain, whereas with vapers, it takes a minute, depending on technique.
so if you feel like a smoke, and think the vaper just won't cut it, vape for like 10 minutes, then decide if you need a smoke. also experiment with different inhalation techniques.
if you're working up to quitting the smokes, look forward to some really positive side effects, like taste and smell improving, lung capacity improving. I used to be puffed climbing a mates stairs to get to his flat, used to collapse into a chair when i finally made it almost choking to dead. now, not even breathing heavy when i get to the top.