lol 1 of the 5 firebirds i have loaded up is a jerk. It dry burns all the time even with 100% pg tropical punch. I have to give the middle of the tube a lil squonk to get enough juice to the coil and then I get a few good vapes until I have to do it again. Once I vape through it I will use this one to fiddle with. See if I can't make it perform a bit better.
The rest and the 3ml are vape heaven after the 1st fill. Straight lung inhale with no worry of juice in the mouth or dry coil hits. Very good for 2 or 3 flavors at a time with 3 twists :O I can say that these are the first things I can trust not to eff up too bad.
The only thing I notice is that on 2 of the heaven vapes...the lil flap doesnt always close on the top silicone plug and lil bits of juice leak into it if you rest it flat for a bit. I tried to be gentle on the last 2 I opened and the flap is still being stupid.
Even with these and other minor issues.. I still would trade every stardust i have for a pack of firebirds and I will not buy another for myself, I have high hopes for the vivi nova and the ce4 but no more stardusts for me.
I also mixed up some ecto and it is very good but too orange peel'y for me. I then added 4 drops of sweetener to the 10ml and it was a bit nicer. Anyone mix anything into it that was superbly awesome?

I find it needs a bit of tangerine or something to make it less orange and more file alive'ish. Still been working for me in the 3ml fb all day but I know it could be much better.