90% of the time it is USER error. I had a meeting with the big boss man yesterday and I had him order the RN4081 (nPro). He told me it sucks and wants something new. I asked him to see it. He had been smoking it BONE DRY and did not order any juice like I said. EVEN WHEN I GAVE HIM AN IN-PERSON TUTORIAL HE DID NOT BELIEVE IT REALLY NEEDED TO BE REFILLED! Anyhow, I put in some RMV Mocha for him and his eyes lit up like WOW THIS BLOWS TONS OF SMOKE!
 
I also let him try my 510. He said he'll keep the 4081. How many more people are using these without properly keeping the coil wet??
 
 
 
That is one long run-on sentence that is hard to comprehend, but I will try anyway. If you think that all users say Blu sucks, you're wrong. They say their crappy shipping service sucks. In fact, here is a post by another user saying they figured out how to make Blu work better than their 510.
 
 
 
The full thread can be found here: 
http://www.e-cigarette-forum.com/forum/blu-electronic-cigarettes/35455-johnson-creek-pbt-mod.html
 
 
 
I have a few full 510's and more 4081's that I ordered. If my experience tells me that I can get a bigger cloud of vapor from the 4081 in a shorter interval with more flavor, how can I be wrong?
 
The only reason why you only know of 2 people vouching for the 4081 is because Jim & I are the only ones that actually spend time typing about it. The others avoid the limelight/hassle.
 
And as far as this whole automobile analogy, I agree with Jim because my first car was a VW Jetta and I raced my friend's 8 cylinder Ford Mustang, His car is no doubt better, faster, etc. but yet I beat him in a race because I knew how to whip my car around and he didn't. So what's the point in owning something fancier if you can do the same (and do it better) with a cheaper alternative?
 
And have you ever seen a 16 year old drive a lamborghini? Not quite the same either.