I've been relying on the Ooze Pronto, lately with a quarts tip. The battery is bigger than I need for a day trip, it lasts for several days (OK, I yam a lightweight). It's not quite as portable as I'd like, since you have to take the lid off, then take the lid off the dab jar, then dip the hot tip in the rosin jar. I can't really do all that while walking, or hanging by my toes from the yardarm. I'd like something pocket-size that can hold enough rosin inside for several sessions and leave the jar at home. I looked at the Ooze Slim Pen 2, but it's not clear whether or not it comes with an internal rosin bucket.