A friend of mine showed up the other day with an ego v v2, I got to handle it, I got to use it and I wouldn't own it! It's not heavy enough to be a good paper weight! This may not mean much, but no matter what,
batteries are still heavy! It weighed no more than a standard ego 650! It was just longer and a screen at the bottom of it!
Of the two choices, and if you don't mind buying
batteries and the higher cost, to me it's the Vamo hands down! Batteries are relatively cheap vs. a replacement ego.