I notice the inside of the base on the long wicked ones at smoktek appear a bit different from that on the NW Vapors short wicked ones. Does someone have a clue on what might be different there?
Are you refer to Vision 808-eGo/vGo Transparent Clearomizer V2, 2.1-2.4 Ohm vs. CE4 Clear Cartomizer (Clearomizer) for Echo / 808D / 901 - $6.50 ?
The long wicks is for 808 eGo (the 808 fat batt with eGo outer thread - it won't fit Echo, Echo has a flat thread so this Vision 808 Echo Transparent Clearomizer, 2.5 Ohm is the one for Echo).
If you can see the base inside the clearos from the side (the base is pushed up because it need to accommodate the outer thread), it has eGo thread.