I'm used to the ipv5 menu since it's very similar to the sx mini 350j chip, and I own several mods with that chip. The form factor doesn't bother me, and my doors fit well.
I'm not particularly fond on the box shape of the HW, but I can deal with it. I now have the first one, and 3 Sig 100Ws. I have huge hands for a small woman so no mod is too big for me. I have man hands, without the hair, lol!
The crazy menu on the g2 does concern me. I'm not sure I want to go through that much trouble to get a good vape, but tc with kanthal is interesting.
As for outdated though, the g2 came out in January

Holy shit, it's ancient!
I've chosen the ipv5 as the comparison mod because I think it has a better chip, and is well built, compared to other bargain priced mods. I expect it to outlast my rx200s.