Just got my order in the mail. Picked up 2 packs of 510 cartomizers (USA Mix and Menthol), an "Expert" atomizer, and a mega battery.
So far...
The cartomizers are ok. There is virtually no TH with the USA Mix, a little flavor, but ok vapor production (but less than the Joye 510 atomizers).
The Menthol ones have a much better TH (probably due to the mint flavoring), a much stronger taste, and about the same amount of vapor.
The "Expert" 510 atty is similar to the cartomizers in flavor, but much more vapor production. The bridge is also HUGE. Will give this atty a try with a cart later today. I can imagine it will wick much better than the Joye attys, making carts easier to use with this one.
Mega battery is charging, so I can't comment on that yet.
Overall, that cartomizers aren't "wowing" me like I expected, but I think the simplicity of using them, combined with the large
juice capacity (especially when away from home where I can't easily refill a cart) will keep me using them.
I would say that with the cartomizers and "Expert" atty, you're probably not going to taste a lot of with these, except with "strong" flavors like mint, etc.