I have used 510 for about 3 months.
It is a good performer.
I like the auto batt.
My main complaint is the 510 is tip heavy,long and heavy.
I ordered a 89mm M403 to address the tip heavy and weight issue.
I've never had a complaint about the balance of the 510, but I think it's because I use a manual battery, so I hold it differently than any other e-cig. I guess, I've come to accept what is and isn't important. I started with a Joye306 that looked so like a cigarette I used to tap it in the ashtray without thinking. Wonderful machine (89mm, too) but it had to go because of battery life. The DSE103 just made me hold it like a cigarette and that was kind of nice and the battery life was probably better than most minis.
The 510 is the most unattractive e-cig I have. Hey, the 901's are glossy but they've got style! It's a black (or white) tube and that's about it. No flash whatsoever. But the vapor and the flavor are what matter to me most, so I'm really not even looking for the next big thing. This satisfies me.
As for the video, you can get 510's direct from China for $35-38 bucks. A great deal. Why would you want to spend $50-60 to get one from the US? Valid point, right? Well, of course, they have to charge that much to make a profit. Their product ships faster and you don't have to worry about customs (though I've never had a single problem). Most US dealers didn't know what an e-cig was a year or two ago. They found something they loved so much they wanted to share what the found (and make a profit). So, most dealers are very knowledgeable because they're their own best customers. Sure, they give good customer service (not just because they'll get crucified on the forum) because back when they were customer's they remember how they were treated. They want to share their knowledge and experience. They want you to have a positive experience. And they want you to tell their friends. Yes, do tell your friends. Even if you paid $75 for a 510 kit, it's still worth it (compared to cigarettes).
If you're experience was a good one and you want to share it, that's all that matters. Who knows, yours might be the video that makes someone put down the pack.
--Prof Daffy
P.S. Was it just me or did the music in the background and the fireplace make you think about those old Christmas Specials? I was expecting Bing Crosby to show up with a tray of orange
juice at any moment!