For me, it boils down to durability. The Provari wins hands down as it is one of the best constructed units made. There is no arguement there. Most manufacturers will not warranty their devices over 90 days let alone a year. And you can purchase an additional year.
That means when you buy a Provari, you can have 2 years of warranty coverage. NO ONE does this. and it should not be overlooked.
However, the main barrier to entry is cost. Most people have an issue laying close to two Benjamin's on something they may eventually lose or stop using.
The MVP 2.0 is a disposable device...(just like an I-phone). In the past, disposable meant months. A standard Ego-T battery must be charged at least once a day some people charged them more often than that. A low capacity battery, charged multiple times a day will last a very short time. 300 charge cycles goes pretty fast when you are charging twice a day.
The MVP 2.0 and it's 2600mAh battery only needs to be charged once every two days. If you have two MVP's then you can extend the time between charging each one to once every 4 days. This now makes the unit a little "less" disposable. 300 charges every 4 days equates to 1200 days or almost 4 years. The characteristics of Li-Ion will reduce its capacity by 40% over that time just due to the natural degradation of LiIon capacity of approx 10% per year over time.
That's why I support a combination of the two. If you buy an MVP2 now. For forty bucks, you will have an APV that should last well over a year before you need to think about replacing it. By that time, you will have done one of three things.
1. Quit smoking and quit vaping
2. Quit smoking and continue vaping.
3. Start smoking and quit vaping.
If you are in the "Quit smoking and continue vaping" camp, then you can invest in a product like the provari which will provide years and years of service without any additional cost short of replacing the batteries as they wear out. If you are in any of the other two camps, then the MVP has served it's purpose and you don't have to worry about spending a couple hundred dollars on something that you no longer use.
Of course a third option is order a used ProVari. Lower cost, and you know they last......