If you've read my previous review of the DSE701's from various sources, then you'll know that I'm a huge fan of the e-cigar in general. I read a bit of scattered info regarding the RN4062 aka the Havana (Litecig). Several people mentioned liking them more than the 701. So I picked up a few from Litecig and Vaporkings. Both were ordered on the same day. As I have a ton of 701 batteries, chargers, and carts, I only ordered the atty tubes. Vaporkings sent theirs USPS priority mail and Litecig sent theirs by USPS first-class. Both arrived on the same day. Litecig's arrived in a padded plastic envelope with the tube in a separate bubblewrapped bag. Vaporkings tube was in a flat rate cardboard box. Both included receipts/shipping documents and business cards. All came with jewel/battery caps and mouthpieces with covers attached. No batteries or carts were included. All was as it should be. The mouthpieces/covers were unexpected but nice. Litecig and Vaporkings prices were roughly the same. Litecig was offering free shipping for orders over $15 at the time so the Litecig beats VK pricewise for now. VK only offered the black tubes at the time of my order. LC only offered the wood grain at the time, but I now see black and a gold tube offered. The gold looks kind of like a burlwood or maybe a tobacco wrap finish from the photo...it's hard to tell without having one in hand. All the tubes were cleaned and loaded with fresh batteries and carts. All functioned flawlessly. Now to the real issues for me. Comparing them to my 701, I find that they do vape better. The flavor and vapor are slightly better than the 701, but noticable. They don't require priming puffs to get a good hit. Aside from that, there isn't any appreciable difference as far as other factors, i.e. battery life, cart management, etc. A few design differences I noticed is that the 4062 tubes do not appear to have as good a seal/valve mechanism as the 701's. I can leave a 701 fully topped off and not have much to worry about leaking or fluid intrusion into the battery compartment. I have observed a tiny amount of fluid which appears to have intruded into the battery compartment on the 4062s. Another difference is that the draw is slightly airy on the 4062s compared to the 701s. The mouthpieces for the 4062 are very slightly smaller than the 701, so that the covers won't fit on the 701 mouthpieces. Otherwise, all parts appear quite compatible. The LED for the 4062s are still dim compared to your average e-cig but are a bit brighter than the 701s. My thanks to both Vaporkings and Litecig. You're service was exceptional and your prices and speed in delivery were, in my opinion, fantastic. I will continue to do business with these companies for my cigar supplies instead of my previous chinese suppliers. Hope this helps. If anyone has any other questions, I'd be more than happy to help.