I currently am vaping off my M401 which I am pleased with. I have had a couple weeks and currently in the middle of my atty's first soak. Although, my friend owns a JoyE 510 and I really like the set up of the internal atty and manual power on. He has had his a little over 3 weeks and it is still hitting like champ. The set-up I'm looking at comes with 2 batterys, 2 attys, 5 empty carts, charger, and 15 mL of ejuice all for $65. I've heard a few people raving about the 2-Piece kit. Any one who has good things to say about the 510, bad things, or any other suggestions feel free speak your mind. Thanks!
-Erik
-Erik