Thank you soooo much for posting all of this for me! Im thinking i may end up buying a few small guys for work, but i think if 400 spinner is same size as 650 i should choose a mini or 650.
Yes. The Vision Spinner VV* 400 is the same size as the eGo-c 650. So if you want small go for the
smok Tek 350, 400 or the 450 which I have - not sure who makes the 450 but it's a solid batt - 5 click shut off. And is more likely to do better on the eGo rapid charger than the 350.... imo... some would disagree and some would say even the 450 should use the 510 charger. I monitor it - no heat so far....
Understand that the 450 with the Baby T3 is a bit bigger than what's in my hand there. That's just a 510 with a drip tip - no cart, so it isn't something that would be good for 'on the go' unless you don't mind carrying a bottle and dripping

You could stick a 510 cart on it though and take a few of those with you. But the eGo mini + the Baby T3 is stealthy enough. Nice setup really.
* the non-VV version would be about the same size as the 450.