Great info on v 3 & v 5... I love the look of the 3
By excluding the MVP 2, you are excluding what is arguably the best bang for your buck it terms of battery life, durability, and convenience.
That being said.
I have a sigelei Zmax v3 and I am very happy with it. I had to apply noalox joint compound to make the telescoping threads smoother and eliminate some of the thread slop in the device. There is a great thread on the V3 and V5 in this very board which will give you suggestions regarding battery tips to prevent damaging the control board, etc....
The only difference between the v3 and v5 is the ability to insert the USB battery cap and charge your cell phone of your mod. While this is a great little added bonus for the MVP since it is always there, I think it is a useless bit of fluff on the V5 because you lose the ability to vape, and you have to swap out the battery cap and blah blah blah.....If a V3 is not available, then the V5 is great, you'll just pay about 10 bucks more for something you most likely will never use.
I don't have any of the others listed, so I can't comment on those.