Hi Izzy, and welcome to the forum! Well done on your quitting the tobacco, and for cutting down the nicotine so quickly too!
I would agree, eGo batteries and clearos (Vision rebuildables are good if the genuine article - beware cheap copies!) and mine last for an average of 3-4 weeks before either starting to leak, or needing an atomiser change which costs about £3 a pop.
Keep us posted, we'd love to know how you are getting on!
Andy