First second impression: The signal is either smoother, or it feels underpowered even compared to the 40w. Had to turn it up .5w higher than I just had it on my 40w just to get as much vapor.
You know, I thought I was really going to hate having that battery cap in the way, but I think it serves a purpose. I didn't like how the button on the 40w wasn't on the same side as the fire button. The Pico reverses it back to where it should have stayed with the 30w. With the 40w, I ended up covering one of the air holes of my KFL by accident quite often. With the cap in the way, that isn't going to happen anymore.
The 30w is lighter, and it has the tank on the right side of the battery, so I think I might just retire the 40w and go with the pico and the 30w as my daily 2 batteries.
The 40w was pretty and the build quality was nice, but it the battery life was a huge disappointment to me.
In computer terms:
iStick 20w = Windows XP (more like Windows 95 actually)
iStick 30w = Windows 7
iStick 40w = Windows 8 (Cool concept, but poorly thought out)
iStick Pico = ?, we'll see.
iStick 50w probably is like Windows Millennium, but I never had one.
LOL sorry I have to correct this.
iStick 20w = Windows 95
iStick 30w = Windows XP
iStick 50w = Windows Vista
iStick 40w = Windows 8
Hopefully iStick Pico = Windows 7.