You could also try the soft cap cartos. I got mine from MadVapes, they are Boge (silver threads and two air holes), and I really really like them! Still use cart/atty/dripping for tasting new juices, but once I have a flavor I know I want to vape a lot, into a carto it goes. SO much neater and long-lasting. The soft white caps are a cinch to remove for filling.
I noticed the flavor is not quite as robust with all the filler in the carto - and it does take a little while to get it going right. But the one I've been using for Caramel Cream has been going strong for over 2 weeks now (I do rotate several flavors during the day).
I tried the condom filling method (CCFM) with Taryn spin but even using the flat-bottom condom, it was just too messy for me. I don't mind waiting for liquid to wick when topping off - depending on how dry the filler looks, I add maybe 6-10 drops and when it looks like a slushy, I do the wrist flick a few times, repeat until it doesn't dry out further with a few gentle flicks. Warning, it's possible to flick juice out the threaded end if you overfill - I'm lazy, putting the condoms back on for filling & spinning is a PIA for me.
I tried filling from the threaded end (slow), especially on first fill, but refilling is all from the top now. And I have gotten 40-45 drops into a new carto, but then there was leakage.
These cartos are life-changing! If you don't overfill them they don't leak, they draw easy and last a really long time. Even with my sweet flavors they don't seem to gunk up anywhere near as fast as atties... Only tradeoff is the slight flavor softening. On very delicate flavors they might taste too airy, but I've only committed 5 cartos so far, haven't tried any really light flavors in them yet. I mix DIY so I'll be experimenting with extra flavoring to overcome the filler taste softening factor.