Well now I don't even want my Vamo that's in HK. lol. I like the three-button setup idea. No delays or loss of functionality using the SID one-button menu?
A. When you put a battery in the SID, it's on and ready to go. (Vamo needs 5 clicks to turn it on each time the battery is changed or removed)
B. SID remembers your power/voltage setting when changing batteries. It does however forget your display setting (I usually have mine set to show the atomizer resistance setting, so when I change the battery I do have to reset that.). If I remember right, the Vamo resets on each battery change.
C. I know you probably know this, but just in case, 3 fast clicks gets you into the SID menu, then clicking the button walks you through your seven different settings:
1. Power/Voltage Up
2. Power/Voltage Down
3. Power On/Off
4. Battery charge indicator
5. LCD Display (either Voltage, Battery charge or Resistance)
6. LCD Display On/Off
7. Choice of Voltage/Wattage
To me, that's even easier than the 3 button system because I don't have to worry about accidentally bumping the plus or minus buttons by mistake and changing the power settings, which I've done with the Vamo.
Did that help or did I muddy the waters?
