I 'stepped up' from the Ego-C Twist to a Vamo V3 and have been really happy with it. My understanding is that it and the V5 are relatively similar aside from the styling on the outer casing.
And my understanding, which mind you has only been gleaned from reading, is that the Vamo is on par with many - if not most - of the cylindrical VV/VW mods out there. It's mainly becomes a matter of preference for the menu layout and the ways that you access the menu, read the OLED screen, placement of the 'fire' button, and so on. Largely subjective for the most part.
All that said, as much as I enjoy my V3, I do have an Innokin VTR on order and plan on buying my first mechanical mod soon. I'll still use my V3, but like so many other vapers, I enjoy variety.