There is also the Spinner or the U-Turn. The twist part is knurled (easier to grip) and it's a way easier to read the voltages. They are pretty much a copy of the Twist with some nice changes.
Are you the real Bodasafa from the movie Point Break??
This is a tough one. If I have it right, you want a removable battery (Vamo) rather than a disposable battery (Twist). But size is an issue (Twist) but you want a longer life (Vamo).
Kinda doing a reply all from the huge amount of posts Ive received. Thank you all for your contributions.
I suppose I could use the Kgo at work for the slimmer situation and try a Vamo for home/raiding on the pc. I need to do more research on the Vamo, anyone have a good site to link to purchase from?