Would help if we knew what you meant by different. I personally would recommend VV as it's more versatile and makes life much easier, just dial in your sweet spot no matter what atty or carto you're using. VV is all I use now and they are becoming more available in different forms, box, feeders, tubes, etc.
I'm anxious to order the new Buzz Pro in a couple weeks. I have a Buzz and it's pretty much all I use any more. Check it out.
Buzz Pro Coming SOON ! - notcigs.com
Two of the best in their category are:
5 volt: GLV2 from Great Lakes Vapor
Variable volt: Darwin from nhaler.com or evolve.com
You can't beat the throat hit, consistency or battery life of these two better battery devices within their sub-categories.
oh yup found out about this 2 wonderful mods recently. GLV2 does HV vaping by the batteries use? i know darwin and provari are more similar am i right to say that?
The 5 volt GLV2 uses non-propietary batteries and a resister ciruit to provide 5 volt vaping. You simply get much closer to the "inhaled feel" of an analog, more consistency due to the slower drain rate of the batteries and better battery life.
The variable volt Darwin and Provari are quite similar but with several significant differences between the two. They both use regulated, boost circuit technology which keeps the power output consistent even as the battery drains which provides the best vaping consistency. With my Darwin, as a very heavy vaper, I get 21+ hours on a charge and it also doubles as a pass-through. You change the power level, by simply moving a small fly wheel instead of needing to make multiple presses of the button with the Provari. The Darwin senses the resistence change in the atty/carto as you vape and automatically adjusts the power output to maintain your original setting. They are both top of the line VV PV's.
Any idea on the GLV-3? I love the Darwin small fly wheel compared to the provari which have to do multiple press. For both which have display will be a better choice for me IMO.
I'm sure the GLV3 will be as well built as the GLV2. And, unlike other feeder devices that I am familar with, he will allow you to specify which atty connection you prefer. Since I much prefer 801 type atty's, that's a nice advantage.
I guess it depends on what you want in a device.
Variable voltage is a great way to try any wattage, which makes the freedom of vaping seemingly limitless. But what else do you want? Do you want a bottomfeeding device as well? If not, do you desire a box-mod or a tubular mod? Do you prefer wood or metal? Size matters to most, do you prefer something stealthy or something you KNOW you're not gonna lose?
I personally would recommend a MonkeyBoxx VV, but that's because I simply just adore mine! Opinions are BIASED, always remember that. It's about what YOU want, not what WE think you should like
Check this site out to better help make a decision according to your wants and desires Best e-Cig Mod List | e-Cig Mods Database
Also, if you're just looking to try VV on the CHEAP! Madvapes offers a cheap VV box mod for $35 check it Variable Voltage Box Mod