I have NOT tried the Smokeymizer just yet but at some point I will
I have tried the Sapphire Bud from Got Vapes. The Bud has a similar vape engine, but is by far easier to fill than a CE3. No tiny plug, no tweezers. You just pull off the mouth-piece then a little plug with your fingers and drip in your liquid. To me, while they are cartos/not atties, they are everything the eGo T 'should have been' in concept, at a little better price/performance point.
How do they vape? I've enjoyed mine over 3 different production runs for the all PG
tobacco flavors I've used in them.
These days I like so many different things for different liquids and moods and situations, so I don't always reach for the same carto. So, I like the Buds enough to keep some around and they do get well used, but I can't say I'd use them 'exclusively'. Here lately I've been gravitating to larger eGo or
tank sized options.
They come 2 to a box and I believe they have LR ones in the 2 Ohm range, and HV ones in the 3+ ohm range...not cheap but not highway robbery either. Just gotta try a pack.
I've really enjoyed the Visions with thinner liquids as well.
If you like really thick sweet stuff...stick with dripping or polyfill cartos

If you just occasionally vape a thinker liquid and want cart convenience...the 801 atties do work very well with their native carts and hold enough to chain vape a good hour or more. The mega 510 atties are nice as well, but can cost twice as much as an 801. Yep, the bigger atties do work well with their native carts. Nothing like the little 510 and 901 ones.