GotVapes and madvapes are both great. However, if you are looking for a specific product it pays to shop around.
Here's the ones I go to for hardware.
For juice, there's so many choices, you'll need to read reviews here to help.
Good Luck!
DiscountVapers - Your source for savings on electronic cigarettes and accessories, Go-go eGo, vGo
GotVapes.com, E-cigarette Supplies - Atomizers Cartomizers Mods Juice and more
Madvapes LLC - E Cigarettes, Electronic Cigarettes, Vaping Supplies
E-Liquid and Electronic Cigarette Shop - Category Listings
GotVapes and madvapes are both great. However, if you are looking for a specific product it pays to shop around.