The REV3 from 310Vapers (or eGo V6) that I had fell into water and died, so I was in search of a nice tube-style APV with VV and a digital display. I bought the VariTube from VapingZone and the Vision Spinner 1300 mAh from Madvapes. I'm not being paid to make a review. This will be a fast review because I have Shake & Bake pork chops in the oven. First off, don't confuse the VariTube with one of those Lavatube things. This is more of a rebuild modeled after the SmokTech VMax (same DRO, same "+ -" voltage adjustment with independent buttons, same 5-click shutoff, and the voltage rolls up or down when you go above or below the max or minimum (below 3v it goes right to 6v, and vice versa). Build quality is great, but the buttons rattle a little. The eGo style recessed space for cones is a nice extra. The batteries are 18350 size (IMR), but it also accepts my AW 16340 batts from my REV3 without them rattling around. Performance is awesome. 3.7 feels like 3.7, 5.5 feels like 5.5. With my 2 ohm DCT, this thing hits great and provides steady, accurate voltage. The digital readout is large and clear for easy reading. It lacks the advanced settings and features of the ZMax, but its still an awesome device. Now for the Vision Spinner. The finish on this one is chrome, which I prefer. The dial on the bottom for adjusting the voltage (hence the Spinner name) is clearly marked at 3.3, 3.8, 4.3, and 4.8, making fast adjustments easy. The only other feature is the 5-click shutoff. It's basically a long eGo battery that you can make hit a little harder than a regular eGo battery. Performance isn't stellar, but its stronger than a regular eGo. This unit is pretty much just a backup device, and it suffices as such. At 4.8v and with my 2 ohm DCT, it only feels like 3.8v or so. There it is. A quick review. Pork chops are done, time to munch.