To make sure you understand the fundamentals, dripping is when users circumvent the loaded cartridge and choose to drip the liquid directly on the atomiser. This is preferred by many as they cite better flavor and performance from the device. While this will work with most e-cigs, it will not with some, particularly automatic batteries. Auto battery users need to "dip" the atomizer into the liquid.
A video explaining dripping can be found here:
http://www.youtube.com/user/ChrisFromCali#p/u/18/h14QDp4v3O4
I do prefer to drip and when I do, I have found that i choose the long plastic drip tips. I find the metal ones get too hot for me and the short ones can sometimes allow hot fluid to hit your tongue. The long black tips can be found here (although out of stock) a google search will likely find you others.
http://shop.nhaler.com/Drip-Tips-for-901-510-Driptips901-510.htm