You won't find the perfect one it'll find you just keep treading the waters and let it happen. Then when that perfect one finds you another perfect one will creap up on you untill you've got a collection of your perfect ones. The PIF and Classified Forums are a great place for those not so perfect ones you'll collect along the way.
With the primer taste I've found the best thing is soaking and running alcohol for a few min blowing them out and letting them dry. Alcohol evaporates pretty fast so it doesn't take long. I do that with all my new attys now. At first I was just blowing them out and while that got a major portion of the primer out it still took a while of vaping before it was completely gone.
i just ordered an ego and it will be here soon. i keep hearing about this primer thing....what exactly is "primer"? Should i clean the atty with alcohol before i try vaping? What does the primer taste like? how much vaping time did it take for you before the primer taste was gone?