That is great to hear!
But before everyone tries to use other bottles on their REO's you shoud read this: http://www.e-cigarette-forum.com/forum/reos-mods/254143-all-my-vaping-problems-due-25-cent-freaking-3-ml-bottle.html
Though some other bottles may work flawlessly there could be a potential problem.
Thanks for the heads up. When I first started using my REO, I could NOT for the LIFE of me get it to "squonk"
juice up into the atty.
Tried everything, and refrained from cussing it or showing my upset, as my boyfriend got it for me for a present and he was in the room, playing a game, happily oblivious to my being extreeemely frustrated with my new toy.
Turned out that in following the "do not overtighten the bottle" rule, I hadn't tightened it (or my atty?) enough to get a proper seal, so it wasn't feeding, I was just pushing air out of the little feed tube and sucking air right back in. I tightened everything up and everything was peeeeerfect.
The bottles from Fuzion are working well, though they JUST switched to 10ml sample bottles.

So any NEW sampler flavors I get won't come with a "REO bottle" as I now call them... but when I reorder these flavors, I'll have an already-labeled bottle just for my reo.