Since you only smoked around 10 cigarettes per day, I'm thinking you might be fine with whatever you get.
I smoked around 3-10 cigarettes per day, on average, and I never needed more than 2 standard 510 batteries for a day.
And sometimes, I would even get through an entire day with only one standard 510 battery.
Still, if you don't mind something the size of a small cigar, then the Ego/Riva/Tornado/Inferno batteries are ALWAYS a better choice.