I've only tried and used a Kanger Protank 1 and 2. I wasn't fond of the flavor production despite the fine build of the tanks. Then again, I prefer glass cartotanks over clearomizers.
You can find some current options of glass clearomizers in this blog:
SOMETHING SAFE FOR CINNAMON & CITRUS FLAVORS
Hopefully this thread will get some attention, I've been wondering people's opinions on this myself.
I started out with an EVOD BCC (not glass) and a kanger pro tank back in May 2013.....and loved them both. As time went on, and I tried new things....I have since steered away from both (the evod because its plastic, the pro tank because the glue melted from my cinnamon juice, among other issues).....and veered towards glass carto tanks, as Baditude said.
So far, the glass clearos I've tried:
Kanger Pro tank
Kanger Pro Tank 2
Aspire Pyrex Vivi Nova style BDC
Smoktech Aro Pyrex
Out of those 4 glass clearos, the pro tank 2 is my LEAST favorite....in fact, I might have even gotten a dud, I don't know, but I NEVER got it to hit properly.
The pro tank1 is a solid glass clearo....and even though the glue melted on mine, Kanger has since UPDATED the pro tank1 so it no longer uses glue. the Pro Tank1 is time tested, and proven to be a decent, long lasting tank.
The smoketek aro is really nice. It is similar in style to the evod BCC, except its pyrex....and bigger. I like it, although it has a background taste in it that I can't seem to get out, no matter how much I try cleaning it.
The aspire BDC is fantastic.....but I think there is still room for them to improve the coils.
Hope this helps!