I apologize for asking this before in the newb forum but i'm having a hard time getting a straight answer and also cant seem to find it through searching here or online. I like the ego-w as a whole piece, pen cap, carto sleeve and all. When it comes time to replace the carto it comes with what options do i have in order to keep the whole piece together? When i look at the exact carto online it seems more expensive than other replacement carto's like the boge, are the ones it comes with suppose to last longer or something?? Posting a picture of what came with mine because i've seen other ego-w's come with other types. Thanks guys!

