From Vaporbomb.com: They have a candy cane flavor that is nice and minty, but it may be too sweet, however it's very tasty! I'm not a big fan of mint, but I tried this from my best friend and I was hooked! Very tasty! That and Arctic Ice is a VERY smooth menthol-like taste, and is NOT at all sweet, just very refreshing! 
Although I haven't tried it, Gourmet Vapor has "menthol eucalyptus" as an ingredients list- you're able to create your own flavor, but you can just choose the menthol and make it 100% and have the menthol as your flavor.
I, too, have a Joy 510 and I love it. I don't use prefilled carts though, since I don't like the quality of poly-fil that they're stuffed with. I use an ultra-dense poly-fil and it holds a LOT of liquid
Both companies don't do pre-filled, but it's worth a shot if you want to fill them yourself 
Although I haven't tried it, Gourmet Vapor has "menthol eucalyptus" as an ingredients list- you're able to create your own flavor, but you can just choose the menthol and make it 100% and have the menthol as your flavor.

I, too, have a Joy 510 and I love it. I don't use prefilled carts though, since I don't like the quality of poly-fil that they're stuffed with. I use an ultra-dense poly-fil and it holds a LOT of liquid