Does a non-leaking, no fiddling, decent vapor producing ecig exist?
That depends on a lot, and there is no simple answer.
Non-leaking? Of course. I know people will tell you about the plethora of posts about how an eGo-T leaks. Hundreds of posts. Now ask yourself - how many of these things you think have been sold? What would it look like if every person who didn't have a leaking issue were to come in and post to that effect? On a side note - Do people bother to try to find out the cause of the leak? Maybe something they were doing, caused it? I haven't seen much of that - usually just "They leak". Nice generalization.
No fiddling? Depends on what you mean by fiddling. Compared to opening a pack and setting fire to an analog? No. Unless you count disposables, you have to at least charge batteries. That would be 'fiddling' wouldn't it? Guess it comes down to each person's tolerance for fiddling and where it becomes 'excessive'.
Decent vapor? Again, very much a personal opinion. How much vapor you get will depend on everything from equipment to juice to technique. You can balance those factors out in different ways and still get results - but you're probably going to have to violate the 'no fiddling' clause to do it.
Everything is a give and take. Switching to vaping from analogs is not a straight up one-to-one switch. It just depends on how much a person is willing to accept that in order to reap the benefits, they may have to make some small concessions here and there.
No, it isn't just like smoking an analog. So if that's the standard, and that standard is non-negotiable, then analogs will probably be the only acceptable option. But I personally feel, and many agree - the concessions are small, and the return is huge - thus making the switch an obvious choice.