I've tried a few different clearomizers, and nothing comes close to the Aspire Nautilus. The advantages of the Nautilus are:
- Adjustable air flow
- Glass tank which prevents a reaction from certain types of eLiquids
- Large capacity (5ml)
I find the Nautilus provides the best taste and vapor production of any clearomizer I've used. I found a place online that sells them for about $20, so I have five of them filled with different flavors at the moment. I've never had even a hint of a chemical taste when using these tanks. I'm not sure what could be causing it, but I'm guessing it could be attributed to either an impurity left behind from the factory, a faulty atomizer, or the eLiquid itself.
Before using a new tank, i wash it out with hot water and dish washing soap, rinsing it really well, to ensure any impurities that may have been left behind from the manufacturing process are removed. I only see a need for using pure grain alcohol like Everclear, after washing out a used tank, in which I'll put a new flavor. It helps remove the previous flavor to some degree. 195 proof Everclear is not sold in New York, but can be bought in New Jersey. I find 90% isopropyl alcohol to be a good alternatve, as long as its rinsed off well.
I dont dry burn the atomizer. If the problem you're having stems from the atomizer, I would thoroughly wash out the tank, and replace the atomizer with a new one. The box the Nautilus came in will have an extra atomizer, but you'll need more. I replace mine once a week.
If none of the above work, maybe try using a different eLiquid, and
significantly reduce the power on the device you're using. Some eLiquids are more susceptible to "frying" than others, and only do well at a very low voltage or wattage setting. I recommend starting very low, then gradually increasing the power every few puffs until you get to an ideal flavor. As soon as you notice a negative note in the flavor, adjust the power back down.
The only other clearomizer I liked was the iClear 30s. I don't think its as good as a Nautilus, but its ok. I use it for tobacco flavored eLiquids.
Good luck.