Aelle, In my opinion you will be happy with the 510 w/mega batteries, the Spade or the eGo. The choice is yours. You may want to seriously look at the 510 since you spend time at the comp, it is the only one of the 3 that has a passthrough ( you can plug it into the usb port in your comp) option. You can pick up a passthrough for the 510 for about $17. Let us know what you decide.