Got it a few hours ago and I must say I am really pleased. The 510 is flat and centered and the battery tube is straight as an arrow. The battery cap is a real PITA, as Nicole said, they need to use much wider threading the cap turns way too long.
Performance is outstanding. I don't intend on using this with my RDA's but I had to throw the Hobo on there to get a feel for the power settings. On powerful mode it hits like a truck, much better, while being safer, than any device I've used. I do have some excellent mechs but this outdoes all of them.
I love the memory settings. So far I have 1 set for the Subtank, 2 for the Atlantis and 3 for the Hobo. I have a lot of playing around with this before I master the menu system but so far so good. It seems to manage my battery better too. I've been chain vaping this for almost 2 hours and my battery is at 4.09 volts. With my IPV at the same settings I'd be starting to think about changing batteries.
This is an awesome device and I'm really glad I saw this thread. I knew I wanted it but you all gave me the push I needed. One more thing and that's that Coval Vapes is awesome. I paid the standard 189.99 but they did not charge shipping and sent it 2 day priority and threw in some juice. I would have no problem recommending them and I hope to get my temp control from them when it comes out.