You're probably going to have to stick with prefilled cartos then, and I think that will limit your options. You may change your mind later. When I got the blank cartos, the bottles of liquid, and the label maker, I went to it for a few hours filling cartos and labeling them. Filling the cartos was probably a bit more trouble than making the labels, actually. After that, now it's like having prefilled cartos. And I have many more flavors to try to decide which ones I really like and which I don't. I think I'm in a stage of wanting to try all the different flavors out there. Except the crab, of course. I know tasting every flavor is impossible, especially when I want to see if one company's cherry is better than another's, only to find out neither really suits me. Still, trying the flavors it sounds like I might like or at least find interesting is keeping me busy and out of mischief.