I bought an ego V and used it for about a week before getting an Itaste vv.
I assume you have read the description of the Itaste V.3 and know of all the features that it offers that the ego v doesn't offer, so I won't go into them. The main thing is that the Itaste has the look and fell of a much better quality
device, while the ego-v has the feel of a cheap ego clone. I am also a bit afraid of it in that I tried using it as a passthrough when it was charging, and it becomes very, very warm, to the point of being uncomfortable to hold, and I was afraid to use it as a passthrough
The only plus the ego-v offers is that it goes to 6V while the Itaste only goes to 5. If you occasionally want to
vape greater then 5 volts, I would suggest you get 1 or 2 Itaste-v.3 and the ego v for just those occasions.