Wether it's been your favorite for a while now, or you just recently picked it up and fell in love with it! I've been using the atty squared v3, I love its deep juice well and the derlin tip on it... I can get about 10-15 drags off of it without it going to a dry hit which I love.. I haven't used that many RDA's and am looking for a new one as well with a deep juice well. I have the Mutation X V4 and while its a great RDA that chucks the clouds its got NO juice well... so you'll only get 3-4 hits off of it.. Keep in mind I'm vaping both of these at about .25 ohms dual parallel builds and at about 70-80 watts on my IPV3LI. So what is your favorite RDA right now and for what reason?