Boge 510 soft-tips have a rubber removable mouth piece, and so can be filled by dripping or carto-condom method. All cartos can also be filled by dripping on the threaded center hole end, and letting each drop suck in via capillary action. I do this with all my cartos when I don't feel like popping the mouth piece off and filling that way. Even the CE2 cartos, which supposedly require a syringe to fill, can be filled by removing all the inner rings and dripping down the inner wall. I have many types of cartos, and they can all be filled without syringe, although syringe is probably fastest. Even the eGo mega carto will fill, albeit slowly, by dripping on the threaded end and allowing capillary action to pull each drop in. Of course you will have to wait for 40-60 drops to pull in, one by one, and wait a bit every 15 drops or so, so that the
juice diffuses away from the end, but it is totally possible.
In addition, I find like the Boge soft-tips, both 3.0 ohms and 2.5 ohms, in terms of their
vaping. I have used them at 3.7V and 5V and they both do very well in both voltage ranges. Haven't used them on a VV
device, but I cannot imagine they will not be quite good on a little sister.
